Preliminary results of postprocessing G12 raw data

I prepared a couple of RINEX files (using programs that you can download here) generated from a GPS12 and a GPS12XL placed about 15 mts. apart and put them into a GeoGenius project along with some Broadcast Ephemeris obtained from the net.

These were the results for the baseline (DX,DY,DZ):

LogTime DX(mt) DY(mt) DZ(mt) SigmaDX(mm) SigmaDY(mm) SigmaDZ(mm) SigmaN(mm) SigmaE(mm) SigmaH(mm)
5 min 10.8655 5.3768 -11.4147 25.1 45.9 29.5 25.4 46.1 29.0
10 min 11.0570 5.5441 -11.2064 8.3 15.7 9.9 8.4 15.7 9.7

Then, I downloaded some EUREF data from a reference station (MAD2) about 30 Km from my position (I think it is the NASA satellite tracking facility in Robledo de Chavela, for those who know). The results, using also 10 minute data were:

LogTime DX(mt) DY(mt) DZ(mt) SigmaDX(mm) SigmaDY(mm) SigmaDZ(mm) SigmaN(mm) SigmaE(mm) SigmaH(mm)
10 min 4086.8462 34848.2643 -2007.3460 43.9 43.6 26.7 25.3 44.4 43.9

The complete reports for the three processed baselines as generated directly by the postprocessing package can also be checked here (report1,report2, report3).

Some remarks:

In conclusion, despite the low figures obtained, I wouldn't expect much more than a around-the-meter accuracy. Let's see.



ATG, ant@fi.upm.es
Ultima Modificación: Mon Apr 8 12:18:34 CEST 2002