[FOSS-GPS] rtknavi vs rtkrcv
Fred Labrosse
ffl at aber.ac.uk
Mon Nov 2 01:00:47 PST 2015
Hi David,
Thank you for this very useful answer. See below.
On Friday 30 October 2015 12:05:23 David Kelley wrote:
> > If I make it display the satellites, I most of the time don't get any,
> > sometimes 1, sometimes a full set.
> Two questions to consider. This makes me wonder if you are reliability
> getting ephemeris data. Is that what you mean when you say you can not
> display the satellite? In the configuration you have created, can you
> describe what is the path over which the ephemeris messages get to the
> navigation filter?
I have no idea. The only thing I can see that refers to ephemeris is set
to broadcast. I attach my config, in case it helps.
>
> [Aside: It took me quite a bit of trial and error and the help of other
> folks on this list to find out that RTKLIB stores recent past ephemeris
> data in the .ini files. Sometime a config worked, sometimes it did
> not. Turned out the data from a recent past run was still present. I
> learned to edit the end of the ini file to remove this when I wanted to
> test out cold starting issues. Perhaps you are seeing something of the
> same sort.
>
> PS these lines look like:
> eph_01=G02,38,38,0,0,14460624...0,
> eph_04=G05,96,96,0,0,14460......
> eph_11=G12,63,63,0,0,1446.... etc. ]
This is interesting. I was wondering about that because it seems that the
receivers I use do not store that (NV08C). What would be the eequivalent
for rtkrcv? I have looked but couldn't find an equivalent.
Cheers,
Fred
>
> On 10/30/2015 10:19 AM, Fred Labrosse wrote:
> > All,
> >
> > I have been trying to use the unix applications, after getting good
> > results with the Windows ones.
> >
> > I now have a (unix) server that serves data from one receiver for now
> > and if I connect rtknavi (windows) to it in PPP-static I get a fix
> > quite quickly. If at the same time I connect rtkrcv to the same
> > server, the result is not so good. If I make it display the
> > observations (observ 1), I do get data that is similar to what I see
> > in rtknavi. If I make it display the satellites, I most of the time
> > don't get any, sometimes 1, sometimes a full set. This seems to be
> > random between stop/starts. Waiting does not seem to help. If I
> > manage to get a fix in rtkrcv, stop and restart it, usually I don't
> > get a fix. However, if I do the same in rtknavi, I get a fix almost
> > immediately.
> >
> > What have I missed?
> >
> > Cheers,
> >
> > Fred
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# rtkrcv options (2010/08/12 07:12:16, v.2.4.0)
console-passwd =admin
console-timetype =gpst # (0:gpst,1:utc,2:jst,3:tow)
console-soltype =deg # (0:dms,1:deg,2:xyz,3:enu,4:pyl)
console-solflag =1 # (0:off,1:std+2:age/ratio/ns)
inpstr1-type =tcpcli # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
inpstr2-type =off # (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 =:@localhost:1234/:
inpstr2-path =ttyUSB0:115200:8:o:1:off
inpstr3-path =anonymous:passwd at cddis.gsfc.nasa.gov/gps/products/%W/igu%W%D_%hb.sp3.Z::T=-14400,21600,7200,600
inpstr1-format =nvs # (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,14:sp3)
inpstr2-format =nvs # (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,14:sp3)
inpstr3-format =sp3 # (0:rtcm2,1:rtcm3,2:oem4,3:oem3,4:ubx,5:ss2,6:hemis,7:skytraq,14:sp3)
inpstr2-nmeareq =off # (0:off,1:latlon,2:single)
inpstr2-nmealat =0 # (deg)
inpstr2-nmealon =0 # (deg)
outstr1-type =off # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
outstr2-type =off # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
outstr1-path =sol1_%Y%m%d%h%M.pos
outstr2-path =sol2_%Y%m%d%h%M.pos
outstr1-format =llh # (0:llh,1:xyz,2:enu,3:nmea)
outstr2-format =nmea # (0:llh,1:xyz,2:enu,3:nmea)
logstr1-type =off # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,6:ntripsvr)
logstr2-type =off # (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 =rov_%Y%m%d%h%M.log
logstr2-path =ref_%Y%m%d%h%M.log
logstr3-path =cor_%Y%m%d%h%M.log
misc-svrcycle =10 # (ms)
misc-timeout =30000 # (ms)
misc-reconnect =30000 # (ms)
misc-nmeacycle =5000 # (ms)
misc-buffsize =32768 # (bytes)
misc-navmsgsel =all # (0:all,1:rover,1:base,2:corr)
misc-startcmd =
misc-stopcmd =
file-cmdfile1 =
file-cmdfile2 =
file-cmdfile3 =
pos1-posmode =ppp-static # (0:single,1:dgps,2:kinematic,3:static,4:movingbase,5:fixed,6:ppp-kine,7:ppp-static)
pos1-frequency =l1 # (1:l1,2:l1+l2,3:l1+l2+l5)
pos1-soltype =forward # (0:forward,1:backward,2:combined)
pos1-elmask =20 # (deg)
pos1-snrmask =0 # (dBHz)
pos1-dynamics =off # (0:off,1:on)
pos1-tidecorr =off # (0:off,1:on)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec)
pos1-tropopt =saas # (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-exclsats = # (prn ...)
pos1-navsys =5 # (1:gps+2:sbas+4:glo+8:gal+16:qzs+32:comp)
pos2-armode =off # (0:off,1:continuous,2:instantaneous,3:fix-and-hold)
pos2-gloarmode =autocal # (0:off,1:on,2:autocal)
pos2-arthres =3
pos2-arlockcnt =0
pos2-arelmask =0 # (deg)
pos2-aroutcnt =5
pos2-arminfix =10
pos2-slipthres =0.05 # (m)
pos2-maxage =30 # (s)
pos2-rejionno =30 # (m)
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 =off # (0:off,1:on)
out-timesys =gpst # (0:gpst,1:utc,2:jst)
out-timeform =tow # (0:tow,1:hms)
out-timendec =3
out-degform =deg # (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 =off # (0:off,1:state,2:residual)
stats-errratio =100
stats-errphase =0.003 # (m)
stats-errphaseel =0.003 # (m)
stats-errphasebl =0 # (m/10km)
stats-errdoppler =1 # (Hz)
stats-stdbias =30 # (m)
stats-stdiono =0.03 # (m)
stats-stdtrop =0.3 # (m)
stats-prnaccelh =1 # (m/s^2)
stats-prnaccelv =0.1 # (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 =52.44091261 # (deg|m)
ant1-pos2 =-3.96031332 # (deg|m)
ant1-pos3 =202.0 # (m|m)
#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 =0 # (deg|m)
ant2-pos2 =0 # (deg|m)
ant2-pos3 =0 # (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)
file-satantfile =
file-rcvantfile =
file-staposfile =
file-geoidfile =
file-dcbfile =
file-tempdir =temp
file-geexefile =
file-solstatfile =
file-tracefile =
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