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r2wco.html - 98Jul06

r2wco

A program for transforming a standard GPS satallite ephemeris "sp3" file and a troposphere Sinex file to a new reference frame.

Overview

The program r2wco reads an sp3 Orbits file and a Snxdif report file as input. It uses the seven parameter transformation given in the Snxdif report to transform the sp3 ephemeris file to the reference frame specified by the parameters in the report file. The program also reads an input troposphere Sinex file and applies corrections to the troposphere values based upon the height residuals found in the Snxdif report file.

To run this program an input file with the name r2wco.inp is required to be in the directory in which the program is executed. It must have 5 lines which provide the names of the 3 input data files and the two output data files in the following order;

Snxdif report file
Input Orbits file
Input Troposphere Sinex file
Output Orbits file
Output Troposphere Sinex file.

This program was written in FORTRAN. Predominantly ANSI standard FORTRAN, however it may contain a few isolated routines to query the operating system for time and date, user and system identification. These "system" routines are inherently non-portable but, should be easily modified or disabled.

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r2wco.html
June 24, 1999
Bill Dillinger