[FOSS-GPS] NVS08C-CSM GPS+GLO chi-square error kinematic sol

[Anton Strydom]

Hi Daniel

As a matter of interest I only use GPS. In the past I used a number of
different constellations as well as combinations of constellations
but my best results were from using GPS only. That is using single L1
frequency equipment as well as dual L1/2 frequency equipment

Sincerely

Anton

On Fri, Jun 18, 2021 at 5:45 PM Daniel Karpati <karpati.daniel92 at gmail.com>
wrote:

> Dear Community!
>
> We have a project which uses rtklib 2.4.2. It is a c++ codebase created in
> 2014.
> Every time we run our old original executables, we encounter weird
> behavior. Our position occasionally drops 500-1000m away from its real
> position then it just simply stays there, some minutes later another
> "teleport". As far as I know the code is built with the following flags:
> -ENAGLO -ENAGAL -ENACMP -ENAQZS. I found some old nvs binr file in our
> archive (2014). When replaying them everything look good. Has there been
> any significant change since then?
>
> Now I can recompile the codebase with  msvc 2019 (v142). Same results.
>
> Today I tried rtknavi just to ensure its not a coding failure in our code.
> Version 2.4.2 gives errors when GLONASS is enabled, but its perfect when
> only GPS is enabled. However version 2.4.3 b34 seems good with GLONASS,
> also with GLONASS+GPS.
> Should I upgrade to v2.4.3 b34?
>
> The error I get when using 2.4.2: point pos error (chi-square error nv=18
> vv=295165.6 cs=34.5). I dont get other error just this multiple times. No
> position at all visible. I see that observation data is present and 6-7 GLO
> sats for both rover side and base side.
> receivers ID (nvs nv08c-csm): CSM23 02.06 22/04/13
> base and rover receivers are identical
>
> As you can see the receivers are quite old (V3.1 maybe) with old firmware.
> Should I upgrade?
>
> 2.4.2 config:
> RTKNAVI options (2021/06/16 21:40:12, v.2.4.2)
>
> pos1-posmode =kinematic #
> (0:single,1:dgps,2:kinematic,3:static,4:movingbase,5:fixed,6:ppp-kine,7:ppp-static)
> pos1-frequency =l1+l2 #
> (1:l1,2:l1+l2,3:l1+l2+l5,4:l1+l2+l5+l6,5:l1+l2+l5+l6+l7)
> pos1-soltype =forward # (0:forward,1:backward,2:combined)
> pos1-elmask =0 # (deg)
> pos1-snrmask_r =off # (0:off,1:on)
> pos1-snrmask_b =off # (0:off,1:on)
> pos1-snrmask_L1 =0,0,0,0,0,0,0,0,0
> pos1-snrmask_L2 =0,0,0,0,0,0,0,0,0
> pos1-snrmask_L5 =0,0,0,0,0,0,0,0,0
> pos1-dynamics =off # (0:off,1:on)
> pos1-tidecorr =off # (0:off,1:on)
> pos1-ionoopt =off #
> (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:vtec_sf,9:vtec_ef,10:gtec)
> pos1-tropopt =off # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad)
> pos1-sateph =brdc #
> (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
> pos1-posopt1 =off # (0:off,1:on)
> pos1-posopt2 =off # (0:off,1:on)
> pos1-posopt3 =off # (0:off,1:on)
> pos1-posopt4 =off # (0:off,1:on)
> pos1-posopt5 =off # (0:off,1:on)
> pos1-exclsats = # (prn ...)
> pos1-navsys =4 # (1:gps+2:sbas+4:glo+8:gal+16:qzs+32:comp)
> pos2-armode =fix-and-hold #
> (0:off,1:continuous,2:instantaneous,3:fix-and-hold)
> pos2-gloarmode =on # (0:off,1:on,2:autocal)
> pos2-arthres =3
> pos2-arlockcnt =5
> pos2-arelmask =0 # (deg)
> pos2-arminfix =10
> pos2-elmaskhold =0 # (deg)
> pos2-aroutcnt =5
> pos2-maxage =30 # (s)
> pos2-syncsol =off # (0:off,1:on)
> pos2-slipthres =0.05 # (m)
> pos2-rejionno =30 # (m)
> pos2-rejgdop =30
> pos2-niter =1
> pos2-baselen =0 # (m)
> pos2-basesig =0 # (m)
> out-solformat =llh # (0:llh,1:xyz,2:enu,3:nmea)
> out-outhead =on # (0:off,1:on)
> out-outopt =on # (0:off,1:on)
> out-timesys =gpst # (0:gpst,1:utc,2:jst)
> out-timeform =hms # (0:tow,1:hms)
> out-timendec =9
> out-degform =dms # (0:deg,1:dms)
> out-fieldsep =
> out-height =ellipsoidal # (0:ellipsoidal,1:geodetic)
> out-geoid =internal # (0:internal,1:egm96,2:egm08_2.5,3:egm08_1,4:gsi2000)
> out-solstatic =all # (0:all,1:single)
> out-nmeaintv1 =0 # (s)
> out-nmeaintv2 =0 # (s)
> out-outstat =residual # (0:off,1:state,2:residual)
> stats-eratio1 =100
> stats-eratio2 =100
> stats-errphase =0.003 # (m)
> stats-errphaseel =0.003 # (m)
> stats-errphasebl =0 # (m/10km)
> stats-errdoppler =10 # (Hz)
> stats-stdbias =30 # (m)
> stats-stdiono =0.03 # (m)
> stats-stdtrop =0.3 # (m)
> stats-prnaccelh =1 # (m/s^2)
> stats-prnaccelv =10 # (m/s^2)
> stats-prnbias =0.0001 # (m)
> stats-prniono =0.001 # (m)
> stats-prntrop =0.0001 # (m)
> stats-clkstab =5e-12 # (s/s)
> ant1-postype =llh # (0:llh,1:xyz,2:single,3:posfile,4:rinexhead,5:rtcm)
> ant1-pos1 =0 # (deg|m)
> ant1-pos2 =0 # (deg|m)
> ant1-pos3 =0 # (m|m)
> ant1-anttype =
> ant1-antdele =0 # (m)
> ant1-antdeln =0 # (m)
> ant1-antdelu =0 # (m)
> ant2-postype =llh # (0:llh,1:xyz,2:single,3:posfile,4:rinexhead,5:rtcm)
> ant2-pos1 =47.4781059999999 # (deg|m)
> ant2-pos2 =19.04182 # (deg|m)
> ant2-pos3 =135.000000000403 # (m|m)
> ant2-anttype =
> ant2-antdele =0 # (m)
> ant2-antdeln =0 # (m)
> ant2-antdelu =0 # (m)
> misc-timeinterp =off # (0:off,1:on)
> misc-sbasatsel =0 # (0:all)
> misc-rnxopt1 =
> misc-rnxopt2 =
> file-satantfile =
> file-rcvantfile =
> file-staposfile =
> file-geoidfile =
> file-ionofile =
> file-dcbfile =
> file-eopfile =
> file-blqfile =
> file-tempdir =
> file-geexefile =
> file-solstatfile =
> file-tracefile =
>
> inpstr1-type =serial #
> (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
> inpstr2-type =serial #
> (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
> inpstr3-type =off #
> (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
> inpstr1-path =COM3:115200:8⭕1:off
> inpstr2-path =COM4:115200:8⭕1:off
> inpstr3-path =
> inpstr1-format =10 #
> (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,8:gw10,9:javad,15:sp3)
> inpstr2-format =10 #
> (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,8:gw10,9:javad,15:sp3)
> inpstr3-format =10 #
> (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,8:gw10,9:javad,15:sp3)
> inpstr2-nmeareq =off # (0:off,1:latlon,2:single)
> inpstr2-nmealat =0 # (deg)
> inpstr2-nmealon =0 # (deg)
> outstr1-type =file # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
> outstr2-type =file # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
> outstr1-path =C:\Users\ADMIN\Downloads\rtklib_2.4.2\out\sol1_3::T
> outstr2-path =C:\Users\ADMIN\Downloads\rtklib_2.4.2\out\sol2_3::T
> outstr1-format =llh # (0:llh,1:xyz,2:enu,3:nmea)
> outstr2-format =llh # (0:llh,1:xyz,2:enu,3:nmea)
> logstr1-type =file # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
> logstr2-type =file # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
> logstr3-type =off # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
> logstr1-path =C:\Users\ADMIN\Downloads\rtklib_2.4.2\log\Rover_3::T
> logstr2-path =C:\Users\ADMIN\Downloads\rtklib_2.4.2\log\Base_3::T
> logstr3-path =
> misc-svrcycle =10 # (ms)
> misc-timeout =10000 # (ms)
> misc-reconnect =10000 # (ms)
> misc-nmeacycle =1000 # (ms)
> misc-buffsize =32768 # (bytes)
> misc-navmsgsel =all # (0:all,1:rover,2:base,3:corr)
> misc-proxyaddr =
> misc-fswapmargin =30 # (s)
>
>
> Daniel K.
>
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your
> subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/foss-gps/attachments/20210620/fa549cad/attachment-0001.html>