Subj: GBES doppler Users guide
From: Toney Minter
Date: 96 December 9, updated 97 June 25

This document describes GBES offline utility program "doppler" for 
producing the "doppler file" used by the JPL NAVIGATION group for
orbit determination.

Each day you will be e-mailed the results of the previous days tracking passes.
For each tracking pass the orbit file (*.orb) and phase residuals file (*.phr)
are listed.  To create the doppler file for a given tracking pass you 
simply execute the command

doppler <orbit file> <phase residual file>

Here is an expample of the tracking pass summary which will be mailed to you.


96OCT08 11h42m40 Tracking Pass started
96OCT08 11h42m40 TRACK   FILE    = 960930a.bsp.96Oct03.00h08m30.orb
96OCT08 11h42m40 TWT     FILE    = 9610081142.phr
96OCT08 11h42m40 TWT     UPFREQ  =  7222519800
96OCT08 11h42m40 TWT     UPFREQ  =  7222519800 UPPOWER = 3.0
96OCT08 11h43m15 SETFREQ DOPPLER =          -3 RMSFREQ =     1.30   
96OCT08 11h43m15 SETFREQ UPFREQ  =  7222519800 AMPL= 1.22
96OCT08 11h43m45 SETFREQ DOPPLER =           2 RMSFREQ =     1.20   
96OCT08 11h43m45 SETFREQ UPFREQ  =  7222519800 AMPL= 1.24
96OCT08 11h44m00                       Down Link OK
96OCT08 11h44m15 SETFREQ DOPPLER =           7 RMSFREQ =     0.90   
96OCT08 11h44m15 SETFREQ UPFREQ  =  7222519800 AMPL= 1.25
96OCT08 11h44m45 SETFREQ DOPPLER =          13 RMSFREQ =     2.00   
96OCT08 11h44m45 SETFREQ UPFREQ  =  7222519800 AMPL= 1.24
96OCT08 11h45m15 SETFREQ DOPPLER =          18 RMSFREQ =     1.50   
96OCT08 11h45m15 SETFREQ UPFREQ  =  7222519800 AMPL= 1.23
96OCT08 11h45m45 SETFREQ DOPPLER =          26 RMSFREQ =     1.00   
96OCT08 11h45m45 SETFREQ UPFREQ  =  7222519800 AMPL= 1.26
96OCT08 11h46m15 SETFREQ DOPPLER =          35 RMSFREQ =     1.40   
96OCT08 11h46m15 SETFREQ UPFREQ  =  7222519800 AMPL= 1.26
96OCT08 11h46m45 SETFREQ DOPPLER =          47 RMSFREQ =     1.80   
96OCT08 11h46m45 SETFREQ UPFREQ  =  7222519800 AMPL= 1.24
96OCT08 11h47m15 SETFREQ DOPPLER =          63 RMSFREQ =     1.80   
96OCT08 11h47m15 SETFREQ UPFREQ  =  7222519800 AMPL= 1.26
96OCT08 11h50m35                       Down Link Lost
96OCT08 11h51m40                       Down Link OK
96OCT08 11h54m20                       Down Link Lost
96OCT08 11h55m00                       Down Link OK
96OCT08 11h55m05                       Down Link Lost
96OCT08 11h57m45 Tracking Pass ended

From this we see that the orbit file is named 960930a.bsp.96Oct03.00h08m30.orb
and the phase residual file is named 9610081142.phr
Thus to make the doppler file we would use the command

doppler 960930a.bsp.96Oct03.00h08m30.orb 9610081142.phr


The doppler file will automatically be put in the directory /s3/ftp/ovlbi/out
The orbit file and the phase residual files are looked for in their default 
directories (/s3/ovlbi/in and /s3/ovlbi/out respectively).  If you would wish 
to use an orbit file or phase residual file that is not in the default 
directories you must specify the full path and file name of these files. 
Just enter doppler by itself to view all of the options.