Hi, Just wondering what kind of results you are getting with a static base and rover.
Did you get an explanation for the ratio factor? Good, bad? Thanks, Gordon Williams ----- Original Message ----- From: "Danny Miller" <[email protected]> To: "Open Source GPS-related discussion and support" <[email protected]> Sent: Monday, June 20, 2011 4:02 PM Subject: Re: [FOSS-GPS] Can't get Ambiguity Validation Ratio to move > It's working, and I'm excited! > > Is there some way I can find more about "ratio factor of ambiguity > validation"? I understand the basics of integer ambiguity. I'm usually > seeing 1.2, rarely above 1.8 in this field. Is that good? Bad? What > could I expect? > > Danny > > On 6/20/2011 3:56 AM, Tomoji Takasu wrote: > > Dear Danny > > > >> In the data window of RTKNavi, I noticed the Lat/long/height of Base > >> is not listed with real numbers (90deg 0m). This isn't right- that > >> GPS has a fine solution in NMEA. > > > > You have to set the base-station position properly in > > Options dialog for relative modes. RTKNAVI never uses > > receiver's NMEA. > > > > This is FAQ. So I will add FAQ in the support page. > > > > regards, > > > > ******** > > Tomoji TAKASU > > > > -------------------------------------------------- > > From: "Danny Miller" <[email protected]> > > Sent: Monday, June 20, 2011 5:07 PM > > To: <[email protected]> > > Subject: [FOSS-GPS] Can't get Ambiguity Validation Ratio to move > > > >> I'm new to RTK. I have a pair of LEA-6T GPS units, one active > >> Sarantel SL-1206 quadrafiliar helix ant. There were supposed to be > >> two of those but the second one was DOA so I'm making do with an > >> active patch antenna for the second. I don't have an antenna file > >> for either of them. I'm using 2.4.1. > >> > >> I have UBX RXM-RAW and RXM-SFRB reading out of both of them at 5Hz > >> (tried this at 1Hz too). I can get a fix out of either one of them. > >> In Kinematic mode of RTKNavi, I get a position, but the "ratio factor > >> of ambiguity validation" factor is stuck at 0.0. I waited like an > >> hour and it was still at 0. > >> > >> In the data window of RTKNavi, I noticed the Lat/long/height of Base > >> is not listed with real numbers (90deg 0m). This isn't right- that > >> GPS has a fine solution in NMEA. Both Base and Rover are showing > >> strong (~45dbHz) signal bars in all colors. > >> > >> I looked under Solution 1 and Solution 2 and both have valid, similar > >> solutions. > >> > >> I looked under errors and saw: > >> eight "outlier rejected" per sample period (5Hz) > >> one "no double-differenced residuals" message > >> > >> I tried switching the COM ports for Base and Rover, effectively > >> switching which unit was which (neither is moving right now). > >> Nothing changed, the "Base" unit channel still has no Lat/long/height > >> and ambiguity validation is still 0. That is, the problem is not > >> tied to the GPS hardware unit. > >> > >> I tried disabling the Rover in RTKnavi. There's still no solution > >> under the Lat/Long/Height of Base. The signal strength bars all turn > >> gray. > >> > >> I tried the mkl version (I have an i7). It didn't change anything. > >> I tried 2.4.0 rtknavi. In that one, I can't get a rover solution to > >> show up at all, it's blank on the main window and rtkplot shows nothing. > >> > >> Any ideas? > >> > >> Danny > >> > >> > >> _______________________________________________ > >> 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 > >> > >> > >> > > > > > > _______________________________________________ > > 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 > > > > _______________________________________________ > 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 _______________________________________________ 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
