Hello Felipe,
Thanks for the response. In this case, the base station antenna is mounted to a tripod and so not moving. The last screenshot I sent was of the system still in Kinematic mode with the rover inside. I have repeated the test today (Around 3:20PM Eastern on Sept 24) with the system in Single mode -- only receiving information from the base station. Today, G05 is tracking but G02 still is not. I have attached a screenshot. Thanks, -Sean From: [email protected] [mailto:[email protected]] On Behalf Of Felipe G. Nievinski Sent: Wednesday, September 24, 2014 3:10 PM To: [email protected] Subject: Re: [FOSS-GPS] High SNR Satellites not being used Most of the time a satellite set unhealthy by the control segment can still be tracked fine, it's just that its actual orbit is expected not to be as well described by the broadcast ephemerides due to a sudden maneuver. Also, you didn't mention if the data were being processed in point positioning; in relative positioning, a satellite has to be visible from both stations (rover and base) to be usable. -F. ------------------------------ Message: 2 Date: Tue, 23 Sep 2014 16:43:02 -0400 From: "Sean Hyde" <[email protected] <mailto:[email protected]> > To: "'Open Source GPS-related discussion and support'" <[email protected] <mailto:[email protected]> > Subject: Re: [FOSS-GPS] High SNR Satellites not being used Message-ID: <[email protected] <http://gmail.com> > Content-Type: text/plain; charset="utf-8" That?s a great resource! Unfortunately, the period was approx. 12-4PM on Sept 23, 2014 (Eastern US) and 06 is actually tracking OK. 02, 05 and 25 are all showing 50 dBHz and yet not being used. Very strange. -Sean From: [email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Felipe G. Nievinski Sent: Tuesday, September 23, 2014 4:39 PM To: [email protected] <mailto:[email protected]> Subject: Re: [FOSS-GPS] High SNR Satellites not being used Maybe PRN06 was set unhealthy? You didn't mention the tracking period. Check the NANUs, e.g.: <http://celestrak.com/GPS/NANU/2014/nanu.2014057.txt> CONDITION: GPS SATELLITE SVN67 (PRN06) WAS UNUSABLE ON JDAY 198 (17 JUL 2014) BEGINNING 0950 ZULU UNTIL JDAY 198 (17 JUL 2014) ENDING 1507 ZULU. Historical outages here: <http://adn.agi.com/SatelliteOutageCalendar/GPSHistoricalOutages.aspx> -F. Message: 1 Date: Tue, 23 Sep 2014 16:00:05 -0400 From: "Sean Hyde" <[email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]> > > To: <[email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]> > > Subject: [FOSS-GPS] High SNR Satellites not being used Message-ID: <[email protected] <http://gmail.com> <http://gmail.com> > Content-Type: text/plain; charset="us-ascii" Hey Guys, I noticed today that despite some satellites having >40 dBHz (as reported in RTKNavi), they are not green and are not being used. They are also not marked as 'OK' in the RTKMonitor. Any idea why? I do not have any specifically excluded in the 'Options' settings and I have the Elevation Mask set to zero. I've attached a screenshot of the SNR from RTKNavi (the Rover is inside a building so that's why it is so low, but the base station is outside). Thanks, -Sean -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osgeo.org/pipermail/foss-gps/attachments/20140923/3d1b4cba/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: High SNR.PNG Type: image/png Size: 31643 bytes Desc: not available URL: <http://lists.osgeo.org/pipermail/foss-gps/attachments/20140923/3d1b4cba/attachment.png> ------------------------------ _______________________________________________ FOSS-GPS mailing list [email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]> > http://lists.osgeo.org/mailman/listinfo/foss-gps End of FOSS-GPS Digest, Vol 68, Issue 14 **************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osgeo.org/pipermail/foss-gps/attachments/20140923/dab036a5/attachment-0001.html> ------------------------------ _______________________________________________ FOSS-GPS mailing list [email protected] <mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/foss-gps End of FOSS-GPS Digest, Vol 68, Issue 15 ****************************************
_______________________________________________ This message is sent to you from [email protected] mailing list. Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
