Re: [Paparazzi-devel] ublox7 and NV08C-CSM as multi norm recievers

[Ben Laurie]

On 4 January 2014 23:30, Prof. Dr.-Ing. Heinrich Warmers
<address@hidden> wrote:
> Hi Ben,
> i found the following: in the data sheet:
>  Note: GLENS and GPS signals cannot be received and tracked simultaneously
> by u-blox 7 modules.

Ah, thanks - suspected as much, but couldn't find a definitive answer.

> NV08C-CSM
> http://de.farnell.com/jsp/displayProduct.jsp?sku=1902504&CMP=KNC-GDE-FDE-GEN-SKU-MDC&mckv=shYHNzYVc|pcrid|26381260863|kword|nv08c-csm|match|p|plid|

Yeah, I found it on Farnell's UK site, was kinda hoping for an
assembled product rather than just the package.

> https://forum.sparkfun.com/viewtopic.php?f=5&t=36896
> This receiver uses two  MAX2769 the Piksi only one.

Confused - what receiver? That link is a post about NV08-CSM.

> The  NV08C-CSM receiver performs also pseudo ranges and phase information
> for RTK.
> Normally  the gps antenna  for the  RTK  base station has to avoid
> reflections an use  a metal plane with >20cm diameter.
>
> I am surprised  that only  a small module antenna of the Piksi can perform
> phase measurements .
> How is this  physically  possible?
> In 2010 we made experiments with the  ublox  samls module and RTK.
> We had errors in the 50cm range.
>
> Heinrich Warmers
>
>
>
>
>
> Ben Laurie schrieb:
>
> BTW, u-blox 7 can do GLONASS, but its not clear if it can do it at the
> same time as GPS.
>
> On 4 January 2014 21:35, Ben Laurie <address@hidden> wrote:
>
>
> On 4 January 2014 21:02, Prof. Dr.-Ing. Heinrich Warmers
> <address@hidden> wrote:
>
>
> Hi Ben,
>
> GLONASS+GPS are incompatible because they use different frequencies and
> modulators.
> The NV08C-CSM has tow different frond ends.
>
>
> Aha! Do you know where one can get hold of them?
>
>
>
> GPS+GALILEO are compatible. But we have to wait a few years for a working
> GALILEO system.
> The satellites are manufactured in Bremen.
>
> Heinrich
>
> Ben Laurie schrieb:
>
> On 3 January 2014 10:15, Prof. Dr.-Ing. Heinrich Warmers
> <address@hidden> wrote:
>
>
> Hi Christophe,
> the RTK- project from Japan runs with  the beagle board  and low cost ublox
> receivers:
> http://gpspp.sakura.ne.jp/paper2005/isgps_2009_rtklib_revA.pdf
> A low cost solution is to combine the raspberry pi  (45Euro) with Navilog NL
> 507TTL (13 Euro)  for a DGPS base station and upload  the correction data
> with the paparazzi link to the UAV (rover).
> http://opendgps.de/links/
>
> To get better position data  to use a multi  norm receiver like the
> NV08C-CSM   ( http://www.nvs-gnss.com/products/receivers.html
> GLONASS+GPS+GALILEO+SBAS )  is also a excellent way . My smart phone has
> also a muti norm receiver and uses up to 21  satellites  for position
> estimation.
> http://www.kowoma.de/gpsforum/viewtopic.php?f=3&t=3307
>
>
> According to the chip docs u-blox 6 has 50 channels. is this different
> from multi-norm?
>
>
>
> -Heinrich
>
> Christophe De Wagter schrieb:
>
> is it available yet?
> en what is the status of the RTK software?
>
> -Christophe
>
>
> On Thu, Jan 2, 2014 at 10:28 PM, Richard Thornton
> <address@hidden> wrote:
>
>
> Happy New Year,
>
> The Piksi RTK GPS team mentioned Paparazzi integration in a prior campaign
> update, are any devs here working on this?
>
> Thanks for your time.
>
> Best regards
> Richard
>
>
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