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From: | Marcus D. Leech |
Subject: | Re: [Discuss-gnuradio] measuring RSSI - N210 with RFX2400 |
Date: | Sat, 04 Jun 2011 14:07:13 -0400 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Thunderbird/3.1.10 |
On 06/04/2011 01:52 PM, Kresimir Dabcevic wrote:
Only a few of the motherboards have an analog RSSI on the analog receiver chips, and then exposed through one of the low-speed ADCs. A better way is to take your signal stream and compute: 10*LOG10(DECIMATE(SINGLE_POLE_IIR_FILTER(COMPLEX_TO_MAG**2(SIGNAL)))) This is entirely independent of which daughterboard you have present, and might also be somewhat more accurate, and less prone to drift. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org |
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