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[Commit-gnuradio] r9332 - gnuradio/trunk/gr-radio-astronomy/src/python
|
From: |
mleech |
|
Subject: |
[Commit-gnuradio] r9332 - gnuradio/trunk/gr-radio-astronomy/src/python |
|
Date: |
Tue, 19 Aug 2008 13:54:48 -0600 (MDT) |
Author: mleech
Date: 2008-08-19 13:54:47 -0600 (Tue, 19 Aug 2008)
New Revision: 9332
Modified:
gnuradio/trunk/gr-radio-astronomy/src/python/usrp_ra_receiver.py
Log:
Added --interferometer, to allow correlation interferometry when you have
two antenna, and two identical daughtercards.
Cleaned up the way signal chains get built--isolated to separate functions
per mode.
SETI mode works with --dual-mode turned on, but not --interferometer.
Modified: gnuradio/trunk/gr-radio-astronomy/src/python/usrp_ra_receiver.py
===================================================================
--- gnuradio/trunk/gr-radio-astronomy/src/python/usrp_ra_receiver.py
2008-08-19 18:26:18 UTC (rev 9331)
+++ gnuradio/trunk/gr-radio-astronomy/src/python/usrp_ra_receiver.py
2008-08-19 19:54:47 UTC (rev 9332)
@@ -11,7 +11,7 @@
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
@@ -25,7 +25,7 @@
from usrpm import usrp_dbid
from gnuradio import eng_notation
from gnuradio.eng_option import eng_option
-from gnuradio.wxgui import stdgui2, ra_fftsink, ra_stripchartsink,
ra_waterfallsink, form, slider, waterfallsink
+from gnuradio.wxgui import stdgui2, ra_fftsink, ra_stripchartsink,
ra_waterfallsink, form, slider
from optparse import OptionParser
import wx
import sys
@@ -35,1070 +35,1162 @@
import ephem
class app_flow_graph(stdgui2.std_top_block):
- def __init__(self, frame, panel, vbox, argv):
- stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
+ def __init__(self, frame, panel, vbox, argv):
+ stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
- self.frame = frame
- self.panel = panel
-
- parser = OptionParser(option_class=eng_option)
- parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0,
0),
- help="select USRP Rx side A or B (default=A)")
- parser.add_option("-d", "--decim", type="int", default=16,
- help="set fgpa decimation rate to DECIM
[default=%default]")
- parser.add_option("-f", "--freq", type="eng_float", default=None,
- help="set frequency to FREQ", metavar="FREQ")
- parser.add_option("-a", "--avg", type="eng_float", default=1.0,
- help="set spectral averaging alpha")
- parser.add_option("-i", "--integ", type="eng_float", default=1.0,
- help="set integration time")
- parser.add_option("-g", "--gain", type="eng_float", default=None,
- help="set gain in dB (default is midpoint)")
- parser.add_option("-l", "--reflevel", type="eng_float", default=30.0,
- help="Set Total power reference level")
- parser.add_option("-y", "--division", type="eng_float", default=0.5,
- help="Set Total power Y division size")
- parser.add_option("-e", "--longitude", type="eng_float",
default=-76.02, help="Set Observer Longitude")
- parser.add_option("-c", "--latitude", type="eng_float", default=44.85,
help="Set Observer Latitude")
- parser.add_option("-o", "--observing", type="eng_float", default=0.0,
- help="Set observing frequency")
- parser.add_option("-x", "--ylabel", default="dB", help="Y axis label")
- parser.add_option("-z", "--divbase", type="eng_float", default=0.025,
help="Y Division increment base")
- parser.add_option("-v", "--stripsize", type="eng_float", default=2400,
help="Size of stripchart, in 2Hz samples")
- parser.add_option("-F", "--fft_size", type="eng_float", default=1024,
help="Size of FFT")
+ self.frame = frame
+ self.panel = panel
+
+ parser = OptionParser(option_class=eng_option)
+ parser.add_option("-R", "--rx-subdev-spec", type="subdev",
default=(0, 0),
+ help="select USRP Rx side A or B (default=A)")
+ parser.add_option("-d", "--decim", type="int", default=16,
+ help="set fgpa decimation rate to DECIM
[default=%default]")
+ parser.add_option("-f", "--freq", type="eng_float",
default=None,
+ help="set frequency to FREQ", metavar="FREQ")
+ parser.add_option("-a", "--avg", type="eng_float", default=1.0,
+ help="set spectral averaging alpha")
+ parser.add_option("-i", "--integ", type="eng_float",
default=1.0,
+ help="set integration time")
+ parser.add_option("-g", "--gain", type="eng_float",
default=None,
+ help="set gain in dB (default is midpoint)")
+ parser.add_option("-l", "--reflevel", type="eng_float",
default=30.0,
+ help="Set Total power reference level")
+ parser.add_option("-y", "--division", type="eng_float",
default=0.5,
+ help="Set Total power Y division size")
+ parser.add_option("-e", "--longitude", type="eng_float",
default=-76.02,help="Set Observer Longitude")
+ parser.add_option("-c", "--latitude", type="eng_float",
default=44.85,help="Set Observer Latitude")
+ parser.add_option("-o", "--observing", type="eng_float",
default=0.0,
+ help="Set observing frequency")
+ parser.add_option("-x", "--ylabel", default="dB", help="Y axis
label")
+ parser.add_option("-z", "--divbase", type="eng_float",
default=0.025, help="Y Division increment base")
+ parser.add_option("-v", "--stripsize", type="eng_float",
default=2400, help="Size of stripchart, in 2Hz samples")
+ parser.add_option("-F", "--fft_size", type="eng_float",
default=1024, help="Size of FFT")
+ parser.add_option("-N", "--decln", type="eng_float",
default=999.99, help="Observing declination")
+ parser.add_option("-X", "--prefix", default="./")
+ parser.add_option("-M", "--fft_rate", type="eng_float",
default=8.0, help="FFT Rate")
+ parser.add_option("-A", "--calib_coeff", type="eng_float",
default=1.0, help="Calibration coefficient")
+ parser.add_option("-B", "--calib_offset", type="eng_float",
default=0.0, help="Calibration coefficient")
+ parser.add_option("-W", "--waterfall", action="store_true",
default=False, help="Use Waterfall FFT display")
+ parser.add_option("-S", "--setimode", action="store_true",
default=False, help="Enable SETI processing of spectral data")
+ parser.add_option("-K", "--setik", type="eng_float",
default=1.5, help="K value for SETI analysis")
+ parser.add_option("-T", "--setibandwidth", type="eng_float",
default=12500, help="Instantaneous SETI observing bandwidth--must be divisor of
250Khz")
+ parser.add_option("-Q", "--seti_range", type="eng_float",
default=1.0e6, help="Total scan width, in Hz for SETI scans")
+ parser.add_option("-Z", "--dual_mode", action="store_true",
+ default=False, help="Dual-polarization mode")
+ parser.add_option("-I", "--interferometer",
action="store_true", default=False, help="Interferometer mode")
+ (options, args) = parser.parse_args()
- parser.add_option("-N", "--decln", type="eng_float", default=999.99,
help="Observing declination")
- parser.add_option("-X", "--prefix", default="./")
- parser.add_option("-M", "--fft_rate", type="eng_float", default=8.0,
help="FFT Rate")
- parser.add_option("-A", "--calib_coeff", type="eng_float",
default=1.0, help="Calibration coefficient")
- parser.add_option("-B", "--calib_offset", type="eng_float",
default=0.0, help="Calibration coefficient")
- parser.add_option("-W", "--waterfall", action="store_true",
default=False, help="Use Waterfall FFT display")
- parser.add_option("-S", "--setimode", action="store_true",
default=False, help="Enable SETI processing of spectral data")
- parser.add_option("-K", "--setik", type="eng_float", default=1.5,
help="K value for SETI analysis")
- parser.add_option("-T", "--setibandwidth", type="eng_float",
default=12500, help="Instantaneous SETI observing bandwidth--must be divisor of
250Khz")
- parser.add_option("-Q", "--seti_range", type="eng_float",
default=1.0e6, help="Total scan width, in Hz for SETI scans")
- parser.add_option("-Z", "--dual_mode", action="store_true",
- default=False, help="Dual-polarization mode")
- parser.add_option("-I", "--interferometer", action="store_true",
default=False, help="Interferometer mode")
- (options, args) = parser.parse_args()
+ self.setimode = options.setimode
+ self.dual_mode = options.dual_mode
+ self.interferometer = options.interferometer
+ self.normal_mode = False
+ modecount = 0
+ for modes in (self.dual_mode, self.interferometer):
+ if (modes == True):
+ modecount = modecount + 1
+
+ if (modecount > 1):
+ print "must select only 1 of --dual_mode, or
--interferometer"
+ sys.exit(1)
+
+ self.chartneeded = True
+
+ if (self.setimode == True):
+ self.chartneeded = False
+
+ if (self.setimode == True and self.interferometer == True):
+ print "can't pick both --setimode and --interferometer"
+ sys.exit(1)
+
+ if (modecount == 0):
+ self.normal_mode = True
- #if (len(args) == 0):
- #parser.print_help()
- #sys.exit()
+ self.show_debug_info = True
- self.show_debug_info = True
+ # Pick up waterfall option
+ self.waterfall = options.waterfall
- # Pick up waterfall option
- self.waterfall = options.waterfall
+ # SETI mode stuff
+ self.setimode = options.setimode
+ self.seticounter = 0
+ self.setik = options.setik
+ self.seti_fft_bandwidth = int(options.setibandwidth)
- # SETI mode stuff
- self.setimode = options.setimode
- self.seticounter = 0
- self.setik = options.setik
- self.seti_fft_bandwidth = int(options.setibandwidth)
+ # Calculate binwidth
+ binwidth = self.seti_fft_bandwidth / options.fft_size
- # Calculate binwidth
- binwidth = self.seti_fft_bandwidth / options.fft_size
+ # Use binwidth, and knowledge of likely chirp rates to set
reasonable
+ # values for SETI analysis code. We assume that SETI
signals will
+ # chirp at somewhere between 0.10Hz/sec and 0.25Hz/sec.
+ #
+ # upper_limit is the "worst case"--that is, the case for which
we have
+ # to wait the longest to actually see any drift, due to the
quantizing
+ # on FFT bins.
+ upper_limit = binwidth / 0.10
+ self.setitimer = int(upper_limit * 2.00)
+ self.scanning = True
- # Use binwidth, and knowledge of likely chirp rates to set reasonable
- # values for SETI analysis code. We assume that SETI signals will
- # chirp at somewhere between 0.10Hz/sec and 0.25Hz/sec.
- #
- # upper_limit is the "worst case"--that is, the case for which we have
- # to wait the longest to actually see any drift, due to the quantizing
- # on FFT bins.
- upper_limit = binwidth / 0.10
- self.setitimer = int(upper_limit * 2.00)
- self.scanning = True
+ # Calculate the CHIRP values based on Hz/sec
+ self.CHIRP_LOWER = 0.10 * self.setitimer
+ self.CHIRP_UPPER = 0.25 * self.setitimer
- # Calculate the CHIRP values based on Hz/sec
- self.CHIRP_LOWER = 0.10 * self.setitimer
- self.CHIRP_UPPER = 0.25 * self.setitimer
+ # Reset hit counters to 0
+ self.hitcounter = 0
+ self.s1hitcounter = 0
+ self.s2hitcounter = 0
+ self.avgdelta = 0
+ # We scan through 2Mhz of bandwidth around the chosen center
freq
+ self.seti_freq_range = options.seti_range
+ # Calculate lower edge
+ self.setifreq_lower = options.freq - (self.seti_freq_range/2)
+ self.setifreq_current = options.freq
+ # Calculate upper edge
+ self.setifreq_upper = options.freq + (self.seti_freq_range/2)
- # Reset hit counters to 0
- self.hitcounter = 0
- self.s1hitcounter = 0
- self.s2hitcounter = 0
- self.avgdelta = 0
- # We scan through 2Mhz of bandwidth around the chosen center freq
- self.seti_freq_range = options.seti_range
- # Calculate lower edge
- self.setifreq_lower = options.freq - (self.seti_freq_range/2)
- self.setifreq_current = options.freq
- # Calculate upper edge
- self.setifreq_upper = options.freq + (self.seti_freq_range/2)
+ # Maximum "hits" in a line
+ self.nhits = 20
- # Maximum "hits" in a line
- self.nhits = 20
+ # Number of lines for analysis
+ self.nhitlines = 4
- # Number of lines for analysis
- self.nhitlines = 4
+ # We change center frequencies based on nhitlines and setitimer
+ self.setifreq_timer = self.setitimer * (self.nhitlines * 5)
- # We change center frequencies based on nhitlines and setitimer
- self.setifreq_timer = self.setitimer * (self.nhitlines * 5)
+ # Create actual timer
+ self.seti_then = time.time()
- # Create actual timer
- self.seti_then = time.time()
+ # The hits recording array
+ self.hits_array = Numeric.zeros((self.nhits,self.nhitlines),
Numeric.Float64)
+ self.hit_intensities =
Numeric.zeros((self.nhits,self.nhitlines), Numeric.Float64)
+ # Calibration coefficient and offset
+ self.calib_coeff = options.calib_coeff
+ self.calib_offset = options.calib_offset
+ if self.calib_offset < -750:
+ self.calib_offset = -750
+ if self.calib_offset > 750:
+ self.calib_offset = 750
- # The hits recording array
- self.hits_array = Numeric.zeros((self.nhits,self.nhitlines),
Numeric.Float64)
- self.hit_intensities = Numeric.zeros((self.nhits,self.nhitlines),
Numeric.Float64)
- # Calibration coefficient and offset
- self.calib_coeff = options.calib_coeff
- self.calib_offset = options.calib_offset
- if self.calib_offset < -750:
- self.calib_offset = -750
- if self.calib_offset > 750:
- self.calib_offset = 750
+ if self.calib_coeff < 1:
+ self.calib_coeff = 1
+ if self.calib_coeff > 100:
+ self.calib_coeff = 100
- if self.calib_coeff < 1:
- self.calib_coeff = 1
- if self.calib_coeff > 100:
- self.calib_coeff = 100
+ self.integ = options.integ
+ self.avg_alpha = options.avg
+ self.gain = options.gain
+ self.decln = options.decln
- self.integ = options.integ
- self.avg_alpha = options.avg
- self.gain = options.gain
- self.decln = options.decln
+ # Set initial values for datalogging timed-output
+ self.continuum_then = time.time()
+ self.spectral_then = time.time()
+
+
+ # build the graph
- # Set initial values for datalogging timed-output
- self.continuum_then = time.time()
- self.spectral_then = time.time()
-
- self.dual_mode = options.dual_mode
-
- # build the graph
+ self.subdev = [(0, 0), (0,0)]
+
+ #
+ # If SETI mode, we always run at maximum USRP decimation
+ #
+ if (self.setimode):
+ options.decim = 256
- self.subdev = [(0, 0), (0,0)]
- #
- # If SETI mode, we always run at maximum USRP decimation
- #
- if (self.setimode):
- options.decim = 256
- if (self.dual_mode == False):
- self.u = usrp.source_c(decim_rate=options.decim)
- self.u.set_mux(usrp.determine_rx_mux_value(self.u,
options.rx_subdev_spec))
- # determine the daughterboard subdevice we're using
- self.subdev[0] = usrp.selected_subdev(self.u,
options.rx_subdev_spec)
- self.subdev[1] = self.subdev[0]
- self.cardtype = self.subdev[0].dbid()
- else:
- self.u=usrp.source_c(decim_rate=options.decim, nchan=2)
- self.subdev[0] = usrp.selected_subdev(self.u, (0, 0))
- self.subdev[1] = usrp.selected_subdev(self.u, (1, 0))
- self.cardtype = self.subdev[0].dbid()
- self.u.set_mux(0x32103210)
-
-
- #
- # Set 8-bit mode
- #
- width = 8
- shift = 8
- format = self.u.make_format(width, shift)
- r = self.u.set_format(format)
-
- # Set initial declination
- self.decln = options.decln
+ if (self.dual_mode == False and self.interferometer == False):
+ self.u = usrp.source_c(decim_rate=options.decim)
+ self.u.set_mux(usrp.determine_rx_mux_value(self.u,
options.rx_subdev_spec))
+ # determine the daughterboard subdevice we're using
+ self.subdev[0] = usrp.selected_subdev(self.u,
options.rx_subdev_spec)
+ self.subdev[1] = self.subdev[0]
+ self.cardtype = self.subdev[0].dbid()
+ else:
+ self.u=usrp.source_c(decim_rate=options.decim, nchan=2)
+ self.subdev[0] = usrp.selected_subdev(self.u, (0, 0))
+ self.subdev[1] = usrp.selected_subdev(self.u, (1, 0))
+ self.cardtype = self.subdev[0].dbid()
+ self.u.set_mux(0x32103210)
+ c1 = self.subdev[0].name()
+ c2 = self.subdev[1].name()
+ if (c1 != c2):
+ print "Must have identical cardtypes for
--dual_mode or --interferometer"
+ sys.exit(1)
+ #
+ # Set 8-bit mode
+ #
+ width = 8
+ shift = 8
+ format = self.u.make_format(width, shift)
+ r = self.u.set_format(format)
+
+ # Set initial declination
+ self.decln = options.decln
- input_rate = self.u.adc_freq() / self.u.decim_rate()
+ input_rate = self.u.adc_freq() / self.u.decim_rate()
- #
- # Set prefix for data files
- #
- self.prefix = options.prefix
+ #
+ # Set prefix for data files
+ #
+ self.prefix = options.prefix
- #
- # The lower this number, the fewer sample frames are dropped
- # in computing the FFT. A sampled approach is taken to
- # computing the FFT of the incoming data, which reduces
- # sensitivity. Increasing sensitivity inreases CPU loading.
- #
- self.fft_rate = options.fft_rate
+ #
+ # The lower this number, the fewer sample frames are dropped
+ # in computing the FFT. A sampled approach is taken to
+ # computing the FFT of the incoming data, which reduces
+ # sensitivity. Increasing sensitivity inreases CPU loading.
+ #
+ self.fft_rate = options.fft_rate
- self.fft_size = int(options.fft_size)
+ self.fft_size = int(options.fft_size)
- # This buffer is used to remember the most-recent FFT display
- # values. Used later by self.write_spectral_data() to write
- # spectral data to datalogging files, and by the SETI analysis
- # function.
- #
- self.fft_outbuf = Numeric.zeros(self.fft_size, Numeric.Float64)
+ # This buffer is used to remember the most-recent FFT display
+ # values. Used later by self.write_spectral_data() to
write
+ # spectral data to datalogging files, and by the SETI
analysis
+ # function.
+ #
+ self.fft_outbuf = Numeric.zeros(self.fft_size, Numeric.Float64)
- #
- # If SETI mode, only look at seti_fft_bandwidth
- # at a time.
- #
- if (self.setimode):
- self.fft_input_rate = self.seti_fft_bandwidth
+ #
+ # If SETI mode, only look at seti_fft_bandwidth
+ # at a time.
+ #
+ if (self.setimode):
+ self.fft_input_rate = self.seti_fft_bandwidth
- #
- # Build a decimating bandpass filter
- #
- self.fft_input_taps = gr.firdes.complex_band_pass (1.0,
- input_rate,
- -(int(self.fft_input_rate/2)), int(self.fft_input_rate/2), 200,
- gr.firdes.WIN_HAMMING, 0)
+ #
+ # Build a decimating bandpass filter
+ #
+ self.fft_input_taps = gr.firdes.complex_band_pass (1.0,
+ input_rate,
+ -(int(self.fft_input_rate/2)),
int(self.fft_input_rate/2), 200,
+ gr.firdes.WIN_HAMMING, 0)
- #
- # Compute required decimation factor
- #
- decimation = int(input_rate/self.fft_input_rate)
- self.fft_bandpass = gr.fir_filter_ccc (decimation,
- self.fft_input_taps)
- else:
- self.fft_input_rate = input_rate
+ #
+ # Compute required decimation factor
+ #
+ decimation = int(input_rate/self.fft_input_rate)
+ self.fft_bandpass = gr.fir_filter_ccc (decimation,
+ self.fft_input_taps)
+ else:
+ self.fft_input_rate = input_rate
- # Set up FFT display
- if self.waterfall == False:
- self.scope = ra_fftsink.ra_fft_sink_c (panel,
- fft_size=int(self.fft_size), sample_rate=self.fft_input_rate,
- fft_rate=int(self.fft_rate), title="Spectral",
- ofunc=self.fft_outfunc, xydfunc=self.xydfunc)
- else:
- self.scope = ra_waterfallsink.waterfall_sink_c (panel,
- fft_size=int(self.fft_size), sample_rate=self.fft_input_rate,
- fft_rate=int(self.fft_rate), title="Spectral",
ofunc=self.fft_outfunc, size=(1100, 600), xydfunc=self.xydfunc, ref_level=0,
span=10)
+ # Set up FFT display
+ if self.waterfall == False:
+ self.scope = ra_fftsink.ra_fft_sink_c (panel,
+ fft_size=int(self.fft_size),
sample_rate=self.fft_input_rate,
+ fft_rate=int(self.fft_rate), title="Spectral",
+ ofunc=self.fft_outfunc, xydfunc=self.xydfunc)
+ else:
+ self.scope = ra_waterfallsink.waterfall_sink_c (panel,
+ fft_size=int(self.fft_size),
sample_rate=self.fft_input_rate,
+ fft_rate=int(self.fft_rate), title="Spectral",
ofunc=self.fft_outfunc, size=(1100, 600), xydfunc=self.xydfunc, ref_level=0,
span=10)
- # Set up ephemeris data
- self.locality = ephem.Observer()
- self.locality.long = str(options.longitude)
- self.locality.lat = str(options.latitude)
- # We make notes about Sunset/Sunrise in Continuum log files
- self.sun = ephem.Sun()
- self.sunstate = "??"
+ # Set up ephemeris data
+ self.locality = ephem.Observer()
+ self.locality.long = str(options.longitude)
+ self.locality.lat = str(options.latitude)
+
+ # We make notes about Sunset/Sunrise in Continuum log files
+ self.sun = ephem.Sun()
+ self.sunstate = "??"
- # Set up stripchart display
- tit = "Continuum"
- if (self.dual_mode != False):
- tit = "H+V Continuum"
- self.stripsize = int(options.stripsize)
- if self.setimode == False:
- self.chart = ra_stripchartsink.stripchart_sink_f (panel,
- stripsize=self.stripsize,
- title=tit,
- xlabel="LMST Offset (Seconds)",
- scaling=1.0, ylabel=options.ylabel,
- divbase=options.divbase)
+ # Set up stripchart display
+ tit = "Continuum"
+ if (self.dual_mode != False):
+ tit = "H+V Continuum"
+ if (self.interferometer != False):
+ tit = "East x West Correlation"
+ self.stripsize = int(options.stripsize)
+ if self.chartneeded == True:
+ self.chart = ra_stripchartsink.stripchart_sink_f (panel,
+ stripsize=self.stripsize,
+ title=tit,
+ xlabel="LMST Offset (Seconds)",
+ scaling=1.0, ylabel=options.ylabel,
+ divbase=options.divbase)
- # Set center frequency
- self.centerfreq = options.freq
+ # Set center frequency
+ self.centerfreq = options.freq
- # Set observing frequency (might be different from actual programmed
- # RF frequency)
- if options.observing == 0.0:
- self.observing = options.freq
- else:
- self.observing = options.observing
+ # Set observing frequency (might be different from actual
programmed
+ # RF frequency)
+ if options.observing == 0.0:
+ self.observing = options.freq
+ else:
+ self.observing = options.observing
- # Remember our input bandwidth
- self.bw = input_rate
+ # Remember our input bandwidth
+ self.bw = input_rate
- #
- #
- # The strip chart is fed at a constant 1Hz rate
- #
+ #
+ #
+ # The strip chart is fed at a constant 1Hz rate
+ #
- #
- # Call constructors for receive chains
- #
+ #
+ # Call constructors for receive chains
+ #
+
+ if (self.dual_mode == True):
+ self.setup_dual (self.setimode)
+
+ if (self.interferometer == True):
+ self.setup_interferometer(self.setimode)
+
+ if (self.normal_mode == True):
+ self.setup_normal(self.setimode)
+
+ if (self.setimode == True):
+ self.setup_seti()
- if self.setimode == False:
- # The IIR integration filter for post-detection
- self.integrator = gr.single_pole_iir_filter_ff(1.0)
- self.integrator.set_taps (1.0/self.bw)
+ self._build_gui(vbox)
- if (self.dual_mode == False):
- # The detector
- self.detector = gr.complex_to_mag_squared()
-
- # Signal probe
- self.probe = gr.probe_signal_f()
-
- #
- # Continuum calibration stuff
- #
- x = self.calib_coeff/100.0
- self.cal_mult = gr.multiply_const_ff(self.calib_coeff/100.0)
- self.cal_offs = gr.add_const_ff(self.calib_offset*(x*8000))
-
- #
- # Mega decimator after IIR filter
- #
- self.keepn = gr.keep_one_in_n(gr.sizeof_float, self.bw)
+ # Make GUI agree with command-line
+ self.integ = options.integ
+ if self.setimode == False:
+ self.myform['integration'].set_value(int(options.integ))
+ self.myform['offset'].set_value(self.calib_offset)
+ self.myform['dcgain'].set_value(self.calib_coeff)
+ self.myform['average'].set_value(int(options.avg))
- #
- # Start connecting configured modules in the receive chain
- #
-
-
- #
- # Handle dual-polarization mode
- #
- if (self.dual_mode == False):
- self.head = self.u
- self.shead = self.u
-
- else:
- self.di = gr.deinterleave(gr.sizeof_gr_complex)
- self.addchans = gr.add_cc ()
- self.h_power = gr.complex_to_mag_squared()
- self.v_power = gr.complex_to_mag_squared()
- self.connect (self.u, self.di)
-
- #
- # For spectral, adding the two channels works, assuming no gross
- # phase or amplitude error
- self.connect ((self.di, 0), (self.addchans, 0))
- self.connect ((self.di, 1), (self.addchans, 1))
-
- #
- # Connect heads of spectral and total-power chains
- #
- self.head = self.di
- self.shead = self.addchans
-
- #
- # For dual-polarization mode, we compute the sum of the
- # powers on each channel, after they've been detected
- #
- self.detector = gr.add_ff()
- # The scope--handle SETI mode
- if (self.setimode == False):
- self.connect(self.shead, self.scope)
- else:
- self.connect(self.shead, self.fft_bandpass, self.scope)
+ if self.setimode == False:
+ # Make integrator agree with command line
+ self.set_integration(int(options.integ))
- if (self.setimode == False):
- if (self.dual_mode == False):
- self.connect(self.head, self.detector,
- self.integrator, self.keepn, self.cal_mult, self.cal_offs,
self.chart)
- else:
- #
- # In dual-polarization mode, we compute things a little
differently
- # In effect, we have two radiometer chains, terminating in an
adder
- #
- self.connect((self.di, 0), self.h_power)
- self.connect((self.di, 1), self.v_power)
- self.connect(self.h_power, (self.detector, 0))
- self.connect(self.v_power, (self.detector, 1))
- self.connect(self.detector,
- self.integrator, self.keepn, self.cal_mult, self.cal_offs,
self.chart)
+ self.avg_alpha = options.avg
- # current instantaneous integrated detector value
- self.connect(self.cal_offs, self.probe)
+ # Make spectral averager agree with command line
+ if options.avg != 1.0:
+ self.scope.set_avg_alpha(float(1.0/options.avg))
+ self.scope.set_average(True)
- self._build_gui(vbox)
+ if self.setimode == False:
+ # Set division size
+ self.chart.set_y_per_div(options.division)
+ # Set reference(MAX) level
+ self.chart.set_ref_level(options.reflevel)
- # Make GUI agree with command-line
- self.integ = options.integ
- if self.setimode == False:
- self.myform['integration'].set_value(int(options.integ))
- self.myform['offset'].set_value(self.calib_offset)
- self.myform['dcgain'].set_value(self.calib_coeff)
- self.myform['average'].set_value(int(options.avg))
+ # set initial values
+ if options.gain is None:
+ # if no gain was specified, use the mid-point in dB
+ g = self.subdev[0].gain_range()
+ options.gain = float(g[0]+g[1])/2
- if self.setimode == False:
- # Make integrator agree with command line
- self.set_integration(int(options.integ))
+ if options.freq is None:
+ # if no freq was specified, use the mid-point
+ r = self.subdev[0].freq_range()
+ options.freq = float(r[0]+r[1])/2
- self.avg_alpha = options.avg
+ # Set the initial gain control
+ self.set_gain(options.gain)
- # Make spectral averager agree with command line
- if options.avg != 1.0:
- self.scope.set_avg_alpha(float(1.0/options.avg))
- self.scope.set_average(True)
+ if not(self.set_freq(options.freq)):
+ self._set_status_msg("Failed to set initial frequency")
- if self.setimode == False:
- # Set division size
- self.chart.set_y_per_div(options.division)
- # Set reference(MAX) level
- self.chart.set_ref_level(options.reflevel)
+ # Set declination
+ self.set_decln (self.decln)
- # set initial values
- if options.gain is None:
- # if no gain was specified, use the mid-point in dB
- g = self.subdev[0].gain_range()
- options.gain = float(g[0]+g[1])/2
+ # RF hardware information
+ self.myform['decim'].set_value(self.u.decim_rate())
+ self.myform['USB BW'].set_value(self.u.adc_freq() /
self.u.decim_rate())
+ if (self.dual_mode == True):
+
self.myform['dbname'].set_value(self.subdev[0].name()+'/'+self.subdev[1].name())
+ else:
+ self.myform['dbname'].set_value(self.subdev[0].name())
- if options.freq is None:
- # if no freq was specified, use the mid-point
- r = self.subdev[0].freq_range()
- options.freq = float(r[0]+r[1])/2
+ # Set analog baseband filtering, if DBS_RX
+ if self.cardtype in (usrp_dbid.DBS_RX,
usrp_dbid.DBS_RX_REV_2_1):
+ lbw = (self.u.adc_freq() / self.u.decim_rate()) / 2
+ if lbw < 1.0e6:
+ lbw = 1.0e6
+ self.subdev[0].set_bw(lbw)
+ self.subdev[1].set_bw(lbw)
+
+ # Start the timer for the LMST display and datalogging
+ self.lmst_timer.Start(1000)
- # Set the initial gain control
- self.set_gain(options.gain)
- if not(self.set_freq(options.freq)):
- self._set_status_msg("Failed to set initial frequency")
+ def _set_status_msg(self, msg):
+ self.frame.GetStatusBar().SetStatusText(msg, 0)
- # Set declination
- self.set_decln (self.decln)
+ def _build_gui(self, vbox):
+ def _form_set_freq(kv):
+ # Adjust current SETI frequency, and limits
+ self.setifreq_lower = kv['freq'] -
(self.seti_freq_range/2)
+ self.setifreq_current = kv['freq']
+ self.setifreq_upper = kv['freq'] +
(self.seti_freq_range/2)
- # RF hardware information
- self.myform['decim'].set_value(self.u.decim_rate())
- self.myform['USB BW'].set_value(self.u.adc_freq() /
self.u.decim_rate())
- if (self.dual_mode == True):
-
self.myform['dbname'].set_value(self.subdev[0].name()+'/'+self.subdev[1].name())
- else:
- self.myform['dbname'].set_value(self.subdev[0].name())
+ # Reset SETI analysis timer
+ self.seti_then = time.time()
+ # Zero-out hits array when changing frequency
+ self.hits_array[:,:] = 0.0
+ self.hit_intensities[:,:] = -60.0
- # Set analog baseband filtering, if DBS_RX
- if self.cardtype in (usrp_dbid.DBS_RX, usrp_dbid.DBS_RX_REV_2_1):
- lbw = (self.u.adc_freq() / self.u.decim_rate()) / 2
- if lbw < 1.0e6:
- lbw = 1.0e6
- self.subdev[0].set_bw(lbw)
- self.subdev[1].set_bw(lbw)
- # Start the timer for the LMST display and datalogging
- self.lmst_timer.Start(1000)
+ return self.set_freq(kv['freq'])
+ def _form_set_decln(kv):
+ return self.set_decln(kv['decln'])
- def _set_status_msg(self, msg):
- self.frame.GetStatusBar().SetStatusText(msg, 0)
+ # Position the FFT display
+ vbox.Add(self.scope.win, 15, wx.EXPAND)
- def _build_gui(self, vbox):
+ if self.setimode == False:
+ # Position the Total-power stripchart
+ vbox.Add(self.chart.win, 15, wx.EXPAND)
+
+ # add control area at the bottom
+ self.myform = myform = form.form()
+ hbox = wx.BoxSizer(wx.HORIZONTAL)
+ hbox.Add((7,0), 0, wx.EXPAND)
+ vbox1 = wx.BoxSizer(wx.VERTICAL)
+ myform['freq'] = form.float_field(
+ parent=self.panel, sizer=vbox1, label="Center freq",
weight=1,
+ callback=myform.check_input_and_call(_form_set_freq,
self._set_status_msg))
- def _form_set_freq(kv):
- # Adjust current SETI frequency, and limits
- self.setifreq_lower = kv['freq'] - (self.seti_freq_range/2)
- self.setifreq_current = kv['freq']
- self.setifreq_upper = kv['freq'] + (self.seti_freq_range/2)
+ vbox1.Add((4,0), 0, 0)
- # Reset SETI analysis timer
- self.seti_then = time.time()
- # Zero-out hits array when changing frequency
- self.hits_array[:,:] = 0.0
- self.hit_intensities[:,:] = -60.0
+ myform['lmst_high'] = form.static_text_field(
+ parent=self.panel, sizer=vbox1, label="Current LMST",
weight=1)
+ vbox1.Add((4,0), 0, 0)
- return self.set_freq(kv['freq'])
+ if self.setimode == False:
+ myform['spec_data'] = form.static_text_field(
+ parent=self.panel, sizer=vbox1, label="Spectral
Cursor", weight=1)
+ vbox1.Add((4,0), 0, 0)
- def _form_set_decln(kv):
- return self.set_decln(kv['decln'])
+ vbox2 = wx.BoxSizer(wx.VERTICAL)
+ if self.setimode == False:
+ vbox3 = wx.BoxSizer(wx.VERTICAL)
+ g = self.subdev[0].gain_range()
+ myform['gain'] = form.slider_field(parent=self.panel,
sizer=vbox2, label="RF Gain",
+
weight=1,
+
min=int(g[0]), max=int(g[1]),
+
callback=self.set_gain)
- # Position the FFT display
- vbox.Add(self.scope.win, 15, wx.EXPAND)
+ vbox2.Add((4,0), 0, 0)
+ if self.setimode == True:
+ max_savg = 100
+ else:
+ max_savg = 3000
+ myform['average'] = form.slider_field(parent=self.panel,
sizer=vbox2,
+ label="Spectral Averaging (FFT
frames)", weight=1, min=1, max=max_savg, callback=self.set_averaging)
- if self.setimode == False:
- # Position the Total-power stripchart
- vbox.Add(self.chart.win, 15, wx.EXPAND)
-
- # add control area at the bottom
- self.myform = myform = form.form()
- hbox = wx.BoxSizer(wx.HORIZONTAL)
- hbox.Add((7,0), 0, wx.EXPAND)
- vbox1 = wx.BoxSizer(wx.VERTICAL)
- myform['freq'] = form.float_field(
- parent=self.panel, sizer=vbox1, label="Center freq", weight=1,
- callback=myform.check_input_and_call(_form_set_freq,
self._set_status_msg))
-
- vbox1.Add((4,0), 0, 0)
-
- myform['lmst_high'] = form.static_text_field(
- parent=self.panel, sizer=vbox1, label="Current LMST", weight=1)
- vbox1.Add((4,0), 0, 0)
-
- if self.setimode == False:
- myform['spec_data'] = form.static_text_field(
- parent=self.panel, sizer=vbox1, label="Spectral Cursor",
weight=1)
- vbox1.Add((4,0), 0, 0)
-
- vbox2 = wx.BoxSizer(wx.VERTICAL)
- if self.setimode == False:
- vbox3 = wx.BoxSizer(wx.VERTICAL)
- g = self.subdev[0].gain_range()
- myform['gain'] = form.slider_field(parent=self.panel, sizer=vbox2,
label="RF Gain",
- weight=1,
- min=int(g[0]), max=int(g[1]),
- callback=self.set_gain)
-
- vbox2.Add((4,0), 0, 0)
- if self.setimode == True:
- max_savg = 100
- else:
- max_savg = 3000
- myform['average'] = form.slider_field(parent=self.panel, sizer=vbox2,
- label="Spectral Averaging (FFT frames)", weight=1, min=1,
max=max_savg, callback=self.set_averaging)
-
- # Set up scan control button when in SETI mode
- if (self.setimode == True):
- # SETI scanning control
- buttonbox = wx.BoxSizer(wx.HORIZONTAL)
- self.scan_control = form.button_with_callback(self.panel,
- label="Scan: On ",
- callback=self.toggle_scanning)
+ # Set up scan control button when in SETI mode
+ if (self.setimode == True):
+ # SETI scanning control
+ buttonbox = wx.BoxSizer(wx.HORIZONTAL)
+ self.scan_control =
form.button_with_callback(self.panel,
+ label="Scan: On ",
+ callback=self.toggle_scanning)
- buttonbox.Add(self.scan_control, 0, wx.CENTER)
- vbox2.Add(buttonbox, 0, wx.CENTER)
+ buttonbox.Add(self.scan_control, 0, wx.CENTER)
+ vbox2.Add(buttonbox, 0, wx.CENTER)
- vbox2.Add((4,0), 0, 0)
+ vbox2.Add((4,0), 0, 0)
- if self.setimode == False:
- myform['integration'] = form.slider_field(parent=self.panel,
sizer=vbox2,
- label="Continuum Integration Time (sec)", weight=1, min=1,
max=180, callback=self.set_integration)
+ if self.setimode == False:
+ myform['integration'] =
form.slider_field(parent=self.panel, sizer=vbox2,
+ label="Continuum Integration Time (sec)",
weight=1, min=1, max=180, callback=self.set_integration)
- vbox2.Add((4,0), 0, 0)
+ vbox2.Add((4,0), 0, 0)
- myform['decln'] = form.float_field(
- parent=self.panel, sizer=vbox2, label="Current Declination",
weight=1,
- callback=myform.check_input_and_call(_form_set_decln))
- vbox2.Add((4,0), 0, 0)
+ myform['decln'] = form.float_field(
+ parent=self.panel, sizer=vbox2, label="Current
Declination", weight=1,
+ callback=myform.check_input_and_call(_form_set_decln))
+ vbox2.Add((4,0), 0, 0)
- if self.setimode == False:
- myform['offset'] = form.slider_field(parent=self.panel,
sizer=vbox3,
- label="Post-Detector Offset", weight=1, min=-750, max=750,
- callback=self.set_pd_offset)
- vbox3.Add((2,0), 0, 0)
- myform['dcgain'] = form.slider_field(parent=self.panel,
sizer=vbox3,
- label="Post-Detector Gain", weight=1, min=1, max=100,
- callback=self.set_pd_gain)
- vbox3.Add((2,0), 0, 0)
- hbox.Add(vbox1, 0, 0)
- hbox.Add(vbox2, wx.ALIGN_RIGHT, 0)
+ if self.setimode == False:
+ myform['offset'] = form.slider_field(parent=self.panel,
sizer=vbox3,
+ label="Post-Detector Offset", weight=1,
min=-750, max=750,
+ callback=self.set_pd_offset)
+ vbox3.Add((2,0), 0, 0)
+ myform['dcgain'] = form.slider_field(parent=self.panel,
sizer=vbox3,
+ label="Post-Detector Gain", weight=1, min=1,
max=100,
+ callback=self.set_pd_gain)
+ vbox3.Add((2,0), 0, 0)
+ hbox.Add(vbox1, 0, 0)
+ hbox.Add(vbox2, wx.ALIGN_RIGHT, 0)
- if self.setimode == False:
- hbox.Add(vbox3, wx.ALIGN_RIGHT, 0)
+ if self.setimode == False:
+ hbox.Add(vbox3, wx.ALIGN_RIGHT, 0)
- vbox.Add(hbox, 0, wx.EXPAND)
+ vbox.Add(hbox, 0, wx.EXPAND)
- self._build_subpanel(vbox)
+ self._build_subpanel(vbox)
- self.lmst_timer = wx.PyTimer(self.lmst_timeout)
- #self.lmst_timeout()
+ self.lmst_timer = wx.PyTimer(self.lmst_timeout)
+ #self.lmst_timeout()
- def _build_subpanel(self, vbox_arg):
- # build a secondary information panel (sometimes hidden)
+ def _build_subpanel(self, vbox_arg):
+ # build a secondary information panel (sometimes hidden)
- # FIXME figure out how to have this be a subpanel that is always
- # created, but has its visibility controlled by foo.Show(True/False)
-
- if not(self.show_debug_info):
- return
+ # FIXME figure out how to have this be a subpanel that is always
+ # created, but has its visibility controlled by
foo.Show(True/False)
+
+ if not(self.show_debug_info):
+ return
- panel = self.panel
- vbox = vbox_arg
- myform = self.myform
+ panel = self.panel
+ vbox = vbox_arg
+ myform = self.myform
- #panel = wx.Panel(self.panel, -1)
- #vbox = wx.BoxSizer(wx.VERTICAL)
+ #panel = wx.Panel(self.panel, -1)
+ #vbox = wx.BoxSizer(wx.VERTICAL)
- hbox = wx.BoxSizer(wx.HORIZONTAL)
- hbox.Add((5,0), 0)
- myform['decim'] = form.static_float_field(
- parent=panel, sizer=hbox, label="Decim")
+ hbox = wx.BoxSizer(wx.HORIZONTAL)
+ hbox.Add((5,0), 0)
+ myform['decim'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="Decim")
- hbox.Add((5,0), 1)
- myform['USB BW'] = form.static_float_field(
- parent=panel, sizer=hbox, label="USB BW")
+ hbox.Add((5,0), 1)
+ myform['USB BW'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="USB BW")
- hbox.Add((5,0), 1)
- myform['dbname'] = form.static_text_field(
- parent=panel, sizer=hbox)
+ hbox.Add((5,0), 1)
+ myform['dbname'] = form.static_text_field(
+ parent=panel, sizer=hbox)
- hbox.Add((5,0), 1)
- myform['baseband'] = form.static_float_field(
- parent=panel, sizer=hbox, label="Analog BB")
+ hbox.Add((5,0), 1)
+ myform['baseband'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="Analog BB")
- hbox.Add((5,0), 1)
- myform['ddc'] = form.static_float_field(
- parent=panel, sizer=hbox, label="DDC")
+ hbox.Add((5,0), 1)
+ myform['ddc'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="DDC")
- hbox.Add((5,0), 0)
- vbox.Add(hbox, 0, wx.EXPAND)
+ hbox.Add((5,0), 0)
+ vbox.Add(hbox, 0, wx.EXPAND)
-
-
- def set_freq(self, target_freq):
- """
- Set the center frequency we're interested in.
+
+
+ def set_freq(self, target_freq):
+ """
+ Set the center frequency we're interested in.
- @param target_freq: frequency in Hz
- @rypte: bool
+ @param target_freq: frequency in Hz
+ @rypte: bool
- Tuning is a two step process. First we ask the front-end to
- tune as close to the desired frequency as it can. Then we use
- the result of that operation and our target_frequency to
- determine the value for the digital down converter.
- """
- #
- # Everything except BASIC_RX should support usrp.tune()
- #
- if not (self.cardtype == usrp_dbid.BASIC_RX):
- r = usrp.tune(self.u, self.subdev[0]._which, self.subdev[0],
target_freq)
- r = usrp.tune(self.u, self.subdev[1]._which, self.subdev[1],
target_freq)
- else:
- r = self.u.set_rx_freq(0, target_freq)
- f = self.u.rx_freq(0)
- if abs(f-target_freq) > 2.0e3:
- r = 0
- if r:
- self.myform['freq'].set_value(target_freq) # update displayed
value
- #
- # Make sure calibrator knows our target freq
- #
+ Tuning is a two step process. First we ask the front-end to
+ tune as close to the desired frequency as it can. Then we use
+ the result of that operation and our target_frequency to
+ determine the value for the digital down converter.
+ """
+ #
+ # Everything except BASIC_RX should support usrp.tune()
+ #
+ if not (self.cardtype == usrp_dbid.BASIC_RX):
+ r = usrp.tune(self.u, self.subdev[0]._which,
self.subdev[0], target_freq)
+ r = usrp.tune(self.u, self.subdev[1]._which,
self.subdev[1], target_freq)
+ else:
+ r = self.u.set_rx_freq(0, target_freq)
+ f = self.u.rx_freq(0)
+ if abs(f-target_freq) > 2.0e3:
+ r = 0
+ if r:
+ self.myform['freq'].set_value(target_freq) #
update displayed value
+ #
+ # Make sure calibrator knows our target freq
+ #
- # Remember centerfreq---used for doppler calcs
- delta = self.centerfreq - target_freq
- self.centerfreq = target_freq
- self.observing -= delta
- self.scope.set_baseband_freq (self.observing)
+ # Remember centerfreq---used for doppler calcs
+ delta = self.centerfreq - target_freq
+ self.centerfreq = target_freq
+ self.observing -= delta
+ self.scope.set_baseband_freq (self.observing)
- self.myform['baseband'].set_value(r.baseband_freq)
- self.myform['ddc'].set_value(r.dxc_freq)
+ self.myform['baseband'].set_value(r.baseband_freq)
+ self.myform['ddc'].set_value(r.dxc_freq)
- return True
+ return True
- return False
+ return False
- def set_decln(self, dec):
- self.decln = dec
- self.myform['decln'].set_value(dec) # update displayed value
+ def set_decln(self, dec):
+ self.decln = dec
+ self.myform['decln'].set_value(dec) # update
displayed value
- def set_gain(self, gain):
- self.myform['gain'].set_value(gain) # update displayed value
- self.subdev[0].set_gain(gain)
- self.subdev[1].set_gain(gain)
- self.gain = gain
+ def set_gain(self, gain):
+ self.myform['gain'].set_value(gain) # update
displayed value
+ self.subdev[0].set_gain(gain)
+ self.subdev[1].set_gain(gain)
+ self.gain = gain
- def set_averaging(self, avval):
- self.myform['average'].set_value(avval)
- self.scope.set_avg_alpha(1.0/(avval))
- self.scope.set_average(True)
- self.avg_alpha = avval
+ def set_averaging(self, avval):
+ self.myform['average'].set_value(avval)
+ self.scope.set_avg_alpha(1.0/(avval))
+ self.scope.set_average(True)
+ self.avg_alpha = avval
- def set_integration(self, integval):
- if self.setimode == False:
- self.integrator.set_taps(1.0/((integval)*(self.bw/2)))
- self.myform['integration'].set_value(integval)
- self.integ = integval
+ def set_integration(self, integval):
+ if self.setimode == False:
+ self.integrator.set_taps(1.0/((integval)*(self.bw/2)))
+ self.myform['integration'].set_value(integval)
+ self.integ = integval
- #
- # Timeout function
- # Used to update LMST display, as well as current
- # continuum value
- #
- # We also write external data-logging files here
- #
- def lmst_timeout(self):
- self.locality.date = ephem.now()
- if self.setimode == False:
- x = self.probe.level()
- sidtime = self.locality.sidereal_time()
- # LMST
- s = str(ephem.hours(sidtime)) + " " + self.sunstate
- # Continuum detector value
- if self.setimode == False:
- sx = "%7.4f" % x
- s = s + "\nDet: " + str(sx)
- else:
- sx = "%2d" % self.hitcounter
- s1 = "%2d" % self.s1hitcounter
- s2 = "%2d" % self.s2hitcounter
- sa = "%4.2f" % self.avgdelta
- sy = "%3.1f-%3.1f" % (self.CHIRP_LOWER, self.CHIRP_UPPER)
- s = s + "\nHits: " + str(sx) + "\nS1:" + str(s1) + " S2:" +
str(s2)
- s = s + "\nAv D: " + str(sa) + "\nCh lim: " + str(sy)
+ #
+ # Timeout function
+ # Used to update LMST display, as well as current
+ # continuum value
+ #
+ # We also write external data-logging files here
+ #
+ def lmst_timeout(self):
+ self.locality.date = ephem.now()
+ if self.setimode == False:
+ x = self.probe.level()
+ sidtime = self.locality.sidereal_time()
+ # LMST
+ s = str(ephem.hours(sidtime)) + " " + self.sunstate
+ # Continuum detector value
+ if self.setimode == False:
+ sx = "%7.4f" % x
+ s = s + "\nDet: " + str(sx)
+ else:
+ sx = "%2d" % self.hitcounter
+ s1 = "%2d" % self.s1hitcounter
+ s2 = "%2d" % self.s2hitcounter
+ sa = "%4.2f" % self.avgdelta
+ sy = "%3.1f-%3.1f" % (self.CHIRP_LOWER, self.CHIRP_UPPER)
+ s = s + "\nHits: " + str(sx) + "\nS1:" + str(s1) + " S2:" +
str(s2)
+ s = s + "\nAv D: " + str(sa) + "\nCh lim: " + str(sy)
- self.myform['lmst_high'].set_value(s)
+ self.myform['lmst_high'].set_value(s)
- #
- # Write data out to recording files
- #
- if self.setimode == False:
- self.write_continuum_data(x,sidtime)
- self.write_spectral_data(self.fft_outbuf,sidtime)
+ #
+ # Write data out to recording files
+ #
+ if self.setimode == False:
+ self.write_continuum_data(x,sidtime)
+ self.write_spectral_data(self.fft_outbuf,sidtime)
- else:
- self.seti_analysis(self.fft_outbuf,sidtime)
- now = time.time()
- if ((self.scanning == True) and ((now - self.seti_then) >
self.setifreq_timer)):
- self.seti_then = now
- self.setifreq_current = self.setifreq_current +
self.fft_input_rate
- if (self.setifreq_current > self.setifreq_upper):
- self.setifreq_current = self.setifreq_lower
- self.set_freq(self.setifreq_current)
- # Make sure we zero-out the hits array when changing
- # frequency.
- self.hits_array[:,:] = 0.0
- self.hit_intensities[:,:] = 0.0
+ else:
+ self.seti_analysis(self.fft_outbuf,sidtime)
+ now = time.time()
+ if ((self.scanning == True) and ((now - self.seti_then) >
self.setifreq_timer)):
+ self.seti_then = now
+ self.setifreq_current = self.setifreq_current +
self.fft_input_rate
+ if (self.setifreq_current > self.setifreq_upper):
+ self.setifreq_current = self.setifreq_lower
+ self.set_freq(self.setifreq_current)
+ # Make sure we zero-out the hits array when changing
+ # frequency.
+ self.hits_array[:,:] = 0.0
+ self.hit_intensities[:,:] = 0.0
- def fft_outfunc(self,data,l):
- self.fft_outbuf=data
+ def fft_outfunc(self,data,l):
+ self.fft_outbuf=data
- def write_continuum_data(self,data,sidtime):
-
- # Create localtime structure for producing filename
- foo = time.localtime()
- pfx = self.prefix
- filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
- foo.tm_mon, foo.tm_mday, foo.tm_hour)
-
- # Open the data file, appending
- continuum_file = open (filenamestr+".tpdat","a")
-
- flt = "%6.3f" % data
- inter = self.decln
- integ = self.integ
- fc = self.observing
- fc = fc / 1000000
- bw = self.bw
- bw = bw / 1000000
- ga = self.gain
-
- now = time.time()
-
- #
- # If time to write full header info (saves storage this way)
- #
- if (now - self.continuum_then > 20):
- self.sun.compute(self.locality)
- enow = ephem.now()
- sun_insky = "Down"
- self.sunstate = "Dn"
- if ((self.sun.rise_time < enow) and (enow < self.sun.set_time)):
- sun_insky = "Up"
- self.sunstate = "Up"
- self.continuum_then = now
-
- continuum_file.write(str(ephem.hours(sidtime))+" "+flt+"
Dn="+str(inter)+",")
-
continuum_file.write("Ti="+str(integ)+",Fc="+str(fc)+",Bw="+str(bw))
- continuum_file.write(",Ga="+str(ga)+",Sun="+str(sun_insky)+"\n")
- else:
- continuum_file.write(str(ephem.hours(sidtime))+" "+flt+"\n")
-
- continuum_file.close()
- return(data)
+ def write_continuum_data(self,data,sidtime):
+
+ # Create localtime structure for producing filename
+ foo = time.localtime()
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the data file, appending
+ continuum_file = open (filenamestr+".tpdat","a")
+
+ flt = "%6.3f" % data
+ inter = self.decln
+ integ = self.integ
+ fc = self.observing
+ fc = fc / 1000000
+ bw = self.bw
+ bw = bw / 1000000
+ ga = self.gain
+
+ now = time.time()
+
+ #
+ # If time to write full header info (saves storage this way)
+ #
+ if (now - self.continuum_then > 20):
+ self.sun.compute(self.locality)
+ enow = ephem.now()
+ sun_insky = "Down"
+ self.sunstate = "Dn"
+ if ((self.sun.rise_time < enow) and (enow <
self.sun.set_time)):
+ sun_insky = "Up"
+ self.sunstate = "Up"
+ self.continuum_then = now
+
+ continuum_file.write(str(ephem.hours(sidtime))+"
"+flt+" Dn="+str(inter)+",")
+
continuum_file.write("Ti="+str(integ)+",Fc="+str(fc)+",Bw="+str(bw))
+
continuum_file.write(",Ga="+str(ga)+",Sun="+str(sun_insky)+"\n")
+ else:
+ continuum_file.write(str(ephem.hours(sidtime))+"
"+flt+"\n")
+
+ continuum_file.close()
+ return(data)
- def write_spectral_data(self,data,sidtime):
-
- now = time.time()
- delta = 10
-
- # If time to write out spectral data
- # We don't write this out every time, in order to
- # save disk space. Since the spectral data are
- # typically heavily averaged, writing this data
- # "once in a while" is OK.
- #
- if (now - self.spectral_then >= delta):
- self.spectral_then = now
+ def write_spectral_data(self,data,sidtime):
+
+ now = time.time()
+ delta = 10
+
+ # If time to write out spectral data
+ # We don't write this out every time, in order to
+ # save disk space. Since the spectral data are
+ # typically heavily averaged, writing this data
+ # "once in a while" is OK.
+ #
+ if (now - self.spectral_then >= delta):
+ self.spectral_then = now
- # Get localtime structure to make filename from
- foo = time.localtime()
-
- pfx = self.prefix
- filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
- foo.tm_mon, foo.tm_mday, foo.tm_hour)
-
- # Open the file
- spectral_file = open (filenamestr+".sdat","a")
-
- # Setup data fields to be written
- r = data
- inter = self.decln
- fc = self.observing
- fc = fc / 1000000
- bw = self.bw
- bw = bw / 1000000
- av = self.avg_alpha
+ # Get localtime structure to make filename from
+ foo = time.localtime()
+
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx,
foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the file
+ spectral_file = open (filenamestr+".sdat","a")
+
+ # Setup data fields to be written
+ r = data
+ inter = self.decln
+ fc = self.observing
+ fc = fc / 1000000
+ bw = self.bw
+ bw = bw / 1000000
+ av = self.avg_alpha
- # Write those fields
- spectral_file.write("data:"+str(ephem.hours(sidtime))+"
Dn="+str(inter)+",Fc="+str(fc)+",Bw="+str(bw)+",Av="+str(av))
- spectral_file.write (" [ ")
- for r in data:
- spectral_file.write(" "+str(r))
+ # Write those fields
+ spectral_file.write("data:"+str(ephem.hours(sidtime))+"
Dn="+str(inter)+",Fc="+str(fc)+",Bw="+str(bw)+",Av="+str(av))
+ spectral_file.write (" [ ")
+ for r in data:
+ spectral_file.write(" "+str(r))
- spectral_file.write(" ]\n")
- spectral_file.close()
- return(data)
-
- return(data)
+ spectral_file.write(" ]\n")
+ spectral_file.close()
+ return(data)
+
+ return(data)
- def seti_analysis(self,fftbuf,sidtime):
- l = len(fftbuf)
- x = 0
- hits = []
- hit_intensities = []
- if self.seticounter < self.setitimer:
- self.seticounter = self.seticounter + 1
- return
- else:
- self.seticounter = 0
+ def seti_analysis(self,fftbuf,sidtime):
+ l = len(fftbuf)
+ x = 0
+ hits = []
+ hit_intensities = []
+ if self.seticounter < self.setitimer:
+ self.seticounter = self.seticounter + 1
+ return
+ else:
+ self.seticounter = 0
- # Run through FFT output buffer, computing standard deviation (Sigma)
- avg = 0
- # First compute average
- for i in range(0,l):
- avg = avg + fftbuf[i]
- avg = avg / l
+ # Run through FFT output buffer, computing standard deviation
(Sigma)
+ avg = 0
+ # First compute average
+ for i in range(0,l):
+ avg = avg + fftbuf[i]
+ avg = avg / l
- sigma = 0.0
- # Then compute standard deviation (Sigma)
- for i in range(0,l):
- d = fftbuf[i] - avg
- sigma = sigma + (d*d)
+ sigma = 0.0
+ # Then compute standard deviation (Sigma)
+ for i in range(0,l):
+ d = fftbuf[i] - avg
+ sigma = sigma + (d*d)
- sigma = Numeric.sqrt(sigma/l)
+ sigma = Numeric.sqrt(sigma/l)
- #
- # Snarfle through the FFT output buffer again, looking for
- # outlying data points
+ #
+ # Snarfle through the FFT output buffer again, looking for
+ # outlying data points
- start_f = self.observing - (self.fft_input_rate/2)
- current_f = start_f
- l = len(fftbuf)
- f_incr = self.fft_input_rate / l
- hit = -1
+ start_f = self.observing - (self.fft_input_rate/2)
+ current_f = start_f
+ l = len(fftbuf)
+ f_incr = self.fft_input_rate / l
+ hit = -1
- # -nyquist to DC
- for i in range(l/2,l):
- #
- # If current FFT buffer has an item that exceeds the specified
- # sigma
- #
- if ((fftbuf[i] - avg) > (self.setik * sigma)):
- hits.append(current_f)
- hit_intensities.append(fftbuf[i])
- current_f = current_f + f_incr
+ # -nyquist to DC
+ for i in range(l/2,l):
+ #
+ # If current FFT buffer has an item that exceeds the
specified
+ # sigma
+ #
+ if ((fftbuf[i] - avg) > (self.setik * sigma)):
+ hits.append(current_f)
+ hit_intensities.append(fftbuf[i])
+ current_f = current_f + f_incr
- # DC to nyquist
- for i in range(0,l/2):
- #
- # If current FFT buffer has an item that exceeds the specified
- # sigma
- #
- if ((fftbuf[i] - avg) > (self.setik * sigma)):
- hits.append(current_f)
- hit_intensities.append(fftbuf[i])
- current_f = current_f + f_incr
+ # DC to nyquist
+ for i in range(0,l/2):
+ #
+ # If current FFT buffer has an item that exceeds the
specified
+ # sigma
+ #
+ if ((fftbuf[i] - avg) > (self.setik * sigma)):
+ hits.append(current_f)
+ hit_intensities.append(fftbuf[i])
+ current_f = current_f + f_incr
- # No hits
- if (len(hits) <= 0):
- return
+ # No hits
+ if (len(hits) <= 0):
+ return
- #
- # OK, so we have some hits in the FFT buffer
- # They'll have a rather substantial gauntlet to run before
- # being declared a real "hit"
- #
+ #
+ # OK, so we have some hits in the FFT buffer
+ # They'll have a rather substantial gauntlet to run before
+ # being declared a real "hit"
+ #
- # Update stats
- self.s1hitcounter = self.s1hitcounter + len(hits)
+ # Update stats
+ self.s1hitcounter = self.s1hitcounter + len(hits)
- # Weed out buffers with an excessive number of
- # signals above Sigma
- if (len(hits) > self.nhits):
- return
+ # Weed out buffers with an excessive number of
+ # signals above Sigma
+ if (len(hits) > self.nhits):
+ return
- # Weed out FFT buffers with apparent multiple narrowband signals
- # separated significantly in frequency. This means that a
- # single signal spanning multiple bins is OK, but a buffer that
- # has multiple, apparently-separate, signals isn't OK.
- #
- last = hits[0]
- ns2 = 1
- for i in range(1,len(hits)):
- if ((hits[i] - last) > (f_incr*3.0)):
- return
- last = hits[i]
- ns2 = ns2 + 1
+ # Weed out FFT buffers with apparent multiple narrowband signals
+ # separated significantly in frequency. This means that a
+ # single signal spanning multiple bins is OK, but a
buffer that
+ # has multiple, apparently-separate, signals isn't OK.
+ #
+ last = hits[0]
+ ns2 = 1
+ for i in range(1,len(hits)):
+ if ((hits[i] - last) > (f_incr*3.0)):
+ return
+ last = hits[i]
+ ns2 = ns2 + 1
- self.s2hitcounter = self.s2hitcounter + ns2
+ self.s2hitcounter = self.s2hitcounter + ns2
- #
- # Run through all available hit buffers, computing difference between
- # frequencies found there, if they're all within the chirp limits
- # declare a good hit
- #
- good_hit = False
- f_ds = Numeric.zeros(self.nhitlines, Numeric.Float64)
- avg_delta = 0
- k = 0
- for i in range(0,min(len(hits),len(self.hits_array[:,0]))):
- f_ds[0] = abs(self.hits_array[i,0] - hits[i])
- for j in range(1,len(f_ds)):
- f_ds[j] = abs(self.hits_array[i,j] - self.hits_array[i,0])
- avg_delta = avg_delta + f_ds[j]
- k = k + 1
+ #
+ # Run through all available hit buffers, computing difference
between
+ # frequencies found there, if they're all within the
chirp limits
+ # declare a good hit
+ #
+ good_hit = False
+ f_ds = Numeric.zeros(self.nhitlines, Numeric.Float64)
+ avg_delta = 0
+ k = 0
+ for i in range(0,min(len(hits),len(self.hits_array[:,0]))):
+ f_ds[0] = abs(self.hits_array[i,0] - hits[i])
+ for j in range(1,len(f_ds)):
+ f_ds[j] = abs(self.hits_array[i,j] -
self.hits_array[i,0])
+ avg_delta = avg_delta + f_ds[j]
+ k = k + 1
- if (self.seti_isahit (f_ds)):
- good_hit = True
- self.hitcounter = self.hitcounter + 1
- break
+ if (self.seti_isahit (f_ds)):
+ good_hit = True
+ self.hitcounter = self.hitcounter + 1
+ break
- if (avg_delta/k < (self.seti_fft_bandwidth/2)):
- self.avgdelta = avg_delta / k
+ if (avg_delta/k < (self.seti_fft_bandwidth/2)):
+ self.avgdelta = avg_delta / k
- # Save 'n shuffle hits
- # Old hit buffers percolate through the hit buffers
- # (there are self.nhitlines of these buffers)
- # and then drop off the end
- # A consequence is that while the nhitlines buffers are filling,
- # you can get some absurd values for self.avgdelta, because some
- # of the buffers are full of zeros
- for i in range(self.nhitlines,1):
- self.hits_array[:,i] = self.hits_array[:,i-1]
- self.hit_intensities[:,i] = self.hit_intensities[:,i-1]
+ # Save 'n shuffle hits
+ # Old hit buffers percolate through the hit buffers
+ # (there are self.nhitlines of these buffers)
+ # and then drop off the end
+ # A consequence is that while the nhitlines buffers are
filling,
+ # you can get some absurd values for self.avgdelta, because
some
+ # of the buffers are full of zeros
+ for i in range(self.nhitlines,1):
+ self.hits_array[:,i] = self.hits_array[:,i-1]
+ self.hit_intensities[:,i] = self.hit_intensities[:,i-1]
- for i in range(0,len(hits)):
- self.hits_array[i,0] = hits[i]
- self.hit_intensities[i,0] = hit_intensities[i]
+ for i in range(0,len(hits)):
+ self.hits_array[i,0] = hits[i]
+ self.hit_intensities[i,0] = hit_intensities[i]
- # Finally, write the hits/intensities buffer
- if (good_hit):
- self.write_hits(sidtime)
+ # Finally, write the hits/intensities buffer
+ if (good_hit):
+ self.write_hits(sidtime)
- return
+ return
- def seti_isahit(self,fdiffs):
- truecount = 0
+ def seti_isahit(self,fdiffs):
+ truecount = 0
- for i in range(0,len(fdiffs)):
- if (fdiffs[i] >= self.CHIRP_LOWER and fdiffs[i] <=
self.CHIRP_UPPER):
- truecount = truecount + 1
+ for i in range(0,len(fdiffs)):
+ if (fdiffs[i] >= self.CHIRP_LOWER and fdiffs[i] <=
self.CHIRP_UPPER):
+ truecount = truecount + 1
- if truecount == len(fdiffs):
- return (True)
- else:
- return (False)
+ if truecount == len(fdiffs):
+ return (True)
+ else:
+ return (False)
- def write_hits(self,sidtime):
- # Create localtime structure for producing filename
- foo = time.localtime()
- pfx = self.prefix
- filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
- foo.tm_mon, foo.tm_mday, foo.tm_hour)
-
- # Open the data file, appending
- hits_file = open (filenamestr+".seti","a")
+ def write_hits(self,sidtime):
+ # Create localtime structure for producing filename
+ foo = time.localtime()
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the data file, appending
+ hits_file = open (filenamestr+".seti","a")
- # Write sidtime first
- hits_file.write(str(ephem.hours(sidtime))+" "+str(self.decln)+" ")
+ # Write sidtime first
+ hits_file.write(str(ephem.hours(sidtime))+" "+str(self.decln)+"
")
- #
- # Then write the hits/hit intensities buffers with enough
- # "syntax" to allow parsing by external (not yet written!)
- # "stuff".
- #
- for i in range(0,self.nhitlines):
- hits_file.write(" ")
- for j in range(0,self.nhits):
- hits_file.write(str(self.hits_array[j,i])+":")
- hits_file.write(str(self.hit_intensities[j,i])+",")
- hits_file.write("\n")
- hits_file.close()
- return
+ #
+ # Then write the hits/hit intensities buffers with enough
+ # "syntax" to allow parsing by external (not yet written!)
+ # "stuff".
+ #
+ for i in range(0,self.nhitlines):
+ hits_file.write(" ")
+ for j in range(0,self.nhits):
+ hits_file.write(str(self.hits_array[j,i])+":")
+
hits_file.write(str(self.hit_intensities[j,i])+",")
+ hits_file.write("\n")
+ hits_file.close()
+ return
- def xydfunc(self,xyv):
- if self.setimode == True:
- return
- magn = int(Numeric.log10(self.observing))
- if (magn == 6 or magn == 7 or magn == 8):
- magn = 6
- dfreq = xyv[0] * pow(10.0,magn)
- ratio = self.observing / dfreq
- vs = 1.0 - ratio
- vs *= 299792.0
- if magn >= 9:
- xhz = "Ghz"
- elif magn >= 6:
- xhz = "Mhz"
- elif magn <= 5:
- xhz = "Khz"
- s = "%.6f%s\n%.3fdB" % (xyv[0], xhz, xyv[1])
- s2 = "\n%.3fkm/s" % vs
- self.myform['spec_data'].set_value(s+s2)
+ def xydfunc(self,xyv):
+ if self.setimode == True:
+ return
+ magn = int(Numeric.log10(self.observing))
+ if (magn == 6 or magn == 7 or magn == 8):
+ magn = 6
+ dfreq = xyv[0] * pow(10.0,magn)
+ ratio = self.observing / dfreq
+ vs = 1.0 - ratio
+ vs *= 299792.0
+ if magn >= 9:
+ xhz = "Ghz"
+ elif magn >= 6:
+ xhz = "Mhz"
+ elif magn <= 5:
+ xhz = "Khz"
+ s = "%.6f%s\n%.3fdB" % (xyv[0], xhz, xyv[1])
+ s2 = "\n%.3fkm/s" % vs
+ self.myform['spec_data'].set_value(s+s2)
- def xydfunc_waterfall(self,pos):
- lower = self.observing - (self.seti_fft_bandwidth / 2)
- upper = self.observing + (self.seti_fft_bandwidth / 2)
- binwidth = self.seti_fft_bandwidth / 1024
- s = "%.6fMHz" % ((lower + (pos.x*binwidth)) / 1.0e6)
- self.myform['spec_data'].set_value(s)
+ def xydfunc_waterfall(self,pos):
+ lower = self.observing - (self.seti_fft_bandwidth / 2)
+ upper = self.observing + (self.seti_fft_bandwidth / 2)
+ binwidth = self.seti_fft_bandwidth / 1024
+ s = "%.6fMHz" % ((lower + (pos.x*binwidth)) / 1.0e6)
+ self.myform['spec_data'].set_value(s)
- def toggle_cal(self):
- if (self.calstate == True):
- self.calstate = False
- self.u.write_io(0,0,(1<<15))
- self.calibrator.SetLabel("Calibration Source: Off")
- else:
- self.calstate = True
- self.u.write_io(0,(1<<15),(1<<15))
- self.calibrator.SetLabel("Calibration Source: On")
+ def toggle_cal(self):
+ if (self.calstate == True):
+ self.calstate = False
+ self.u.write_io(0,0,(1<<15))
+ self.calibrator.SetLabel("Calibration Source: Off")
+ else:
+ self.calstate = True
+ self.u.write_io(0,(1<<15),(1<<15))
+ self.calibrator.SetLabel("Calibration Source: On")
- def toggle_annotation(self):
- if (self.annotate_state == True):
- self.annotate_state = False
- self.annotation.SetLabel("Annotation: Off")
- else:
- self.annotate_state = True
- self.annotation.SetLabel("Annotation: On")
- #
- # Turn scanning on/off
- # Called-back by "Recording" button
- #
- def toggle_scanning(self):
- # Current scanning? Flip state
- if (self.scanning == True):
- self.scanning = False
- self.scan_control.SetLabel("Scan: Off")
- # Not scanning
- else:
- self.scanning = True
- self.scan_control.SetLabel("Scan: On ")
+ def toggle_annotation(self):
+ if (self.annotate_state == True):
+ self.annotate_state = False
+ self.annotation.SetLabel("Annotation: Off")
+ else:
+ self.annotate_state = True
+ self.annotation.SetLabel("Annotation: On")
+ #
+ # Turn scanning on/off
+ # Called-back by "Recording" button
+ #
+ def toggle_scanning(self):
+ # Current scanning? Flip state
+ if (self.scanning == True):
+ self.scanning = False
+ self.scan_control.SetLabel("Scan: Off")
+ # Not scanning
+ else:
+ self.scanning = True
+ self.scan_control.SetLabel("Scan: On ")
- def set_pd_offset(self,offs):
- self.myform['offset'].set_value(offs)
- self.calib_offset=offs
- x = self.calib_coeff / 100.0
- self.cal_offs.set_k(offs*(x*8000))
+ def set_pd_offset(self,offs):
+ self.myform['offset'].set_value(offs)
+ self.calib_offset=offs
+ x = self.calib_coeff / 100.0
+ self.cal_offs.set_k(offs*(x*8000))
- def set_pd_gain(self,gain):
- self.myform['dcgain'].set_value(gain)
- self.cal_mult.set_k(gain*0.01)
- self.calib_coeff = gain
- x = gain/100.0
- self.cal_offs.set_k(self.calib_offset*(x*8000))
+ def set_pd_gain(self,gain):
+ self.myform['dcgain'].set_value(gain)
+ self.cal_mult.set_k(gain*0.01)
+ self.calib_coeff = gain
+ x = gain/100.0
+ self.cal_offs.set_k(self.calib_offset*(x*8000))
- def compute_notch_taps(self,notchlist):
- NOTCH_TAPS = 256
- tmptaps = Numeric.zeros(NOTCH_TAPS,Numeric.Complex64)
- binwidth = self.bw / NOTCH_TAPS
+ def compute_notch_taps(self,notchlist):
+ NOTCH_TAPS = 256
+ tmptaps = Numeric.zeros(NOTCH_TAPS,Numeric.Complex64)
+ binwidth = self.bw / NOTCH_TAPS
- for i in range(0,NOTCH_TAPS):
- tmptaps[i] = complex(1.0,0.0)
+ for i in range(0,NOTCH_TAPS):
+ tmptaps[i] = complex(1.0,0.0)
- for i in notchlist:
- diff = i - self.observing
- if i == 0:
- break
- if (diff > 0):
- idx = diff / binwidth
- idx = int(idx)
- if (idx < 0 or idx > (NOTCH_TAPS/2)):
- break
- tmptaps[idx] = complex(0.0, 0.0)
+ for i in notchlist:
+ diff = i - self.observing
+ if i == 0:
+ break
+ if (diff > 0):
+ idx = diff / binwidth
+ idx = int(idx)
+ if (idx < 0 or idx > (NOTCH_TAPS/2)):
+ break
+ tmptaps[idx] = complex(0.0, 0.0)
- if (diff < 0):
- idx = -diff / binwidth
- idx = (NOTCH_TAPS/2) - idx
- idx = int(idx+(NOTCH_TAPS/2))
- if (idx < 0 or idx > (NOTCH_TAPS)):
- break
- tmptaps[idx] = complex(0.0, 0.0)
+ if (diff < 0):
+ idx = -diff / binwidth
+ idx = (NOTCH_TAPS/2) - idx
+ idx = int(idx+(NOTCH_TAPS/2))
+ if (idx < 0 or idx > (NOTCH_TAPS)):
+ break
+ tmptaps[idx] = complex(0.0, 0.0)
- self.notch_taps = numpy.fft.ifft(tmptaps)
+ self.notch_taps = numpy.fft.ifft(tmptaps)
+
+ #
+ # Setup common pieces of radiometer mode
+ #
+ def setup_radiometer_common(self):
+ # The IIR integration filter for post-detection
+ self.integrator = gr.single_pole_iir_filter_ff(1.0)
+ self.integrator.set_taps (1.0/self.bw)
+
+ # Signal probe
+ self.probe = gr.probe_signal_f()
+
+ #
+ # Continuum calibration stuff
+ #
+ x = self.calib_coeff/100.0
+ self.cal_mult =
gr.multiply_const_ff(self.calib_coeff/100.0)
+ self.cal_offs =
gr.add_const_ff(self.calib_offset*(x*8000))
+
+ #
+ # Mega decimator after IIR filter
+ #
+ self.keepn = gr.keep_one_in_n(gr.sizeof_float, self.bw)
+
+
+ #
+ # Setup ordinary single-channel radiometer mode
+ #
+ def setup_normal(self, setimode):
+
+ self.head = self.u
+ self.shead = self.u
+
+ if setimode == False:
+ self.detector = gr.complex_to_mag_squared()
+ self.setup_radiometer_common()
+
+ self.connect(self.shead, self.scope)
+ self.connect(self.head, self.detector,
+ self.integrator, self.keepn, self.cal_mult,
self.cal_offs, self.chart)
+
+ self.connect(self.cal_offs, self.probe)
+
+ return
+
+ #
+ # Setup dual-channel (two antenna, usual orthogonal polarity probes in
the same waveguide)
+ #
+ def setup_dual(self, setimode):
+
+ self.di = gr.deinterleave(gr.sizeof_gr_complex)
+ self.addchans = gr.add_cc ()
+ self.detector = gr.add_ff ()
+ self.h_power = gr.complex_to_mag_squared()
+ self.v_power = gr.complex_to_mag_squared()
+ self.connect (self.u, self.di)
+
+ #
+ # For spectral, adding the two channels works, assuming no gross
+ # phase or amplitude error
+ self.connect ((self.di, 0), (self.addchans, 0))
+ self.connect ((self.di, 1), (self.addchans, 1))
+
+ #
+ # Connect heads of spectral and total-power chains
+ #
+ self.head = self.di
+ self.shead = self.addchans
+
+ if (setimode == False):
+
+ self.setup_radiometer_common()
+
+ #
+ # For dual-polarization mode, we compute the sum of the
+ # powers on each channel, after they've been
detected
+ #
+ self.detector = gr.add_ff()
+ #
+ # In dual-polarization mode, we compute things a little
differently
+ # In effect, we have two radiometer chains, terminating
in an adder
+ #
+ self.connect((self.di, 0), self.h_power)
+ self.connect((self.di, 1), self.v_power)
+ self.connect(self.h_power, (self.detector, 0))
+ self.connect(self.v_power, (self.detector, 1))
+ self.connect(self.detector,
+ self.integrator, self.keepn, self.cal_mult,
self.cal_offs, self.chart)
+ self.connect(self.cal_offs, self.probe)
+ self.connect(self.shead, self.scope)
+ return
+
+ #
+ # Setup correlating interferometer mode
+ #
+ def setup_interferometer(self, setimode):
+ self.setup_radiometer_common()
+
+ self.di = gr.deinterleave(gr.sizeof_gr_complex)
+ self.connect (self.u, self.di)
+ self.corr = gr.multiply_cc()
+ self.c2f = gr.complex_to_float()
+
+ self.shead = (self.di, 0)
+
+ # Channel 0 to multiply port 0
+ # Channel 1 to multiply port 1
+ self.connect((self.di, 0), (self.corr, 0))
+ self.connect((self.di, 1), (self.corr, 1))
+
+ #
+ # Multiplier (correlator) to complex-to-float, followed by
integrator, etc
+ #
+ self.connect(self.corr, self.c2f, self.integrator, self.keepn,
self.cal_mult, self.cal_offs, self.chart)
+
+ #
+ # FFT scope gets only 1 channel
+ # FIX THIS, by cross-correlating the *outputs* of two
different FFTs, then display
+ # Funky!
+ #
+ self.connect(self.shead, self.scope)
+
+ #
+ # Output of correlator/integrator chain to probe
+ #
+ self.connect(self.cal_offs, self.probe)
+
+ return
+
+ #
+ # Setup SETI mode
+ #
+ def setup_seti(self):
+ self.connect (self.shead, self.fft_bandpass, self.scope)
+ return
+
+
+
def main ():
- app = stdgui2.stdapp(app_flow_graph, "RADIO ASTRONOMY SPECTRAL/CONTINUUM
RECEIVER: $Revision$", nstatus=1)
- app.MainLoop()
+ app = stdgui2.stdapp(app_flow_graph, "RADIO ASTRONOMY
SPECTRAL/CONTINUUM RECEIVER: $Revision$", nstatus=1)
+ app.MainLoop()
if __name__ == '__main__':
- main ()
+ main ()
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