[FOSS-GPS] Using sp3 files with rnx2rtkp from RTKLIB-- no effect on solution

Timothy Duly timduly4 at gmail.com
Thu Jan 23 15:09:52 PST 2014


I am trying to calculate the precise positioning of a receiver using the
observation (*.o), navigation (*.n), and precise positioning (*.sp3) files
with the command-line program rnx2rtkp from RTKLIB.  However, it does not
appear that the *.sp3 files have any effect toward the navigation solution.
 For example:

duly at remote2:~/GEONET/test$ rnx2rtkp 02130700.11o 02130700.11n -p 0 -o
duly at remote2:~/GEONET/test$ rnx2rtkp 02130700.11o 02130700.11n -p 0 -o
02130700-fine.pos *.sp3
duly at remote2:~/GEONET/test$ diff 02130700.pos 02130700-fine.pos
> % inp file  : igr16264.sp3
> % inp file  : igr16265.sp3
> % inp file  : igu16264_00.sp3
> % inp file  : igu16264_06.sp3
> % inp file  : igu16265_00.sp3
> % inp file  : igu16265_06.sp3

As shown, the only difference between the two processing techniques is that
the program merely recognizes the *.sp3 files-- it does not appear to use
them in the navigation solution.

Does anyone have any idea why the sp3 files are not used by the program?


Timothy M. Duly
Graduate Research Assistant
Remote Sensing & Space Sciences Group
Department of Electrical and Computer Engineering
University of Illinois at Urbana-Champaign
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