Feature request #12980
Handling GNSS receiver data
|Category:||C++ plugins/GPS plugin|
|Pull Request or Patch supplied:||No||Resolution:|
|Easy fix?:||No||Copied to github as #:||21058|
i tried to use an external GPS/GNSS Receiver (u-blox) that allows to use GLONASS satellite data to get more precice Position. The Connection in QGIS works, but no data was received. The result of the contact with the dealer of the Receiver was, that QGIS do not read the incoming prefix $gn, that is used by GNSS only $gp for "basic" GPS data. So we modified the NMEA adjustment of the Receiver - and it works! In QGIS, I can't see all received satellites, but the Signal and showed GPS-Position is very precise. Also, QGIS can only receive/Show 12 Satellites. I think it would be advantageous to use GLONASS and other data sources. So, it would be nice if QGIS could read this NMEA Standards and receive more than 12 satellites. Here is ane example of the used Protokoll the lines with the prefix $PUBX are u-blox specific and not relevant.
$GNDTM,W84,,0.0,N,0.0,E,0.0,W84*71 $GNRMC,081107.00,A,4834.67659,N,00910.54095,E,0.022,,160615,,,A*61 $GNVTG,,T,,M,0.022,N,0.040,K,A*39 $GNGNS,081107.00,4834.67659,N,00910.54095,E,AA,14,0.76,419.4,47.6,,*6B $GNGGA,081107.00,4834.67659,N,00910.54095,E,1,12,0.76,419.4,M,47.6,M,,*47 $GNGSA,A,3,15,13,28,24,20,18,30,05,,,,,1.37,0.76,1.14*1B $GNGSA,A,3,66,76,75,65,67,85,,,,,,,1.37,0.76,1.14*10 $GPGSV,4,1,14,05,08,193,29,11,01,041,,12,03,215,21,13,65,141,49*7D $GPGSV,4,2,14,15,72,269,38,17,27,116,,18,21,309,35,20,26,227,47*7C $GPGSV,4,3,14,22,01,335,,24,33,274,45,28,45,054,27,30,12,081,20*7D $GPGSV,4,4,14,33,29,211,43,39,32,159,34*73 $GLGSV,3,1,10,65,33,194,46,66,58,274,46,67,21,330,42,74,04,063,*63 $GLGSV,3,2,10,75,52,042,39,76,57,280,41,77,08,255,29,83,01,355,19*60 $GLGSV,3,3,10,84,21,041,,85,20,092,27*6F $GNGLL,4834.67659,N,00910.54095,E,081107.00,A,A*7D $GNGRS,081107.00,1,-1.7,-0.1,38.1,0.8,-0.5,9.7,-21.1,-22.7,,,,*49 $GNGRS,081107.00,1,-3.8,-3.6,0.8,1.8,-4.6,8.1,,,,,,*76 $GNGST,081107.00,20,,,,1.0,1.2,2.4*40 $GNZDA,081107.00,16,06,2015,00,00*70 $GNGBS,081107.00,1.0,1.2,2.4,,,,*54 $GNTHS,,V*10 $GNVLW,,N,,N,0.000,N,0.000,N*44 $PUBX,00,081107.00,4834.67659,N,00910.54095,E,466.980,G3,1.5,2.4,0.040,0.00,0.021,,0.76,1.14,0.75,14,0,0*58 $PUBX,03,20,5,U,193,08,29,019,11,-,041,01,,000,12,e,215,03,21,000,13,U,141,65,49,059,15,U,269,72,38,052,17,e,116,27,,000,18,U,309,21,35,059,20,U,227,26,47,059,22,-,335,01,,000,24,U,274,33,45,059,28,U,054,45,27,052,30,e,081,12,20,000,120,e,211,29,,000,126,e,159,32,,000,65,U,194,33,46,058,66,U,274,58,46,057,67,U,330,21,42,058,74,-,063,04,,000,75,U,042,52,39,058,76,U,280,57,41,058*6B $PUBX,04,081107.00,160615,202267.00,1849,16,932,20.272,21*1D
I hope this Report is helpful