Example of the usage of track

 

This example page shows the use and results from track from long baseline kinematic processing.  The case shown is high rate (1-sec sampling) for the hour period around the Dec 21, 2003 San Simeon earthquake. 

 

All files needed to run track and the output of track are included here. A compressed tar file is included that has all the files on this web page.

The help file for track is online.

 

Input files

Name

Type

track.cmd

Track command file (annotated with comments specific to this data set. (User generated)

crbt356_19.03o

1-second sampled rinex file for the hour around the San Simeon earthquake (this site is closest to the epicenter)

lows356_19.03o

1-second rinex file, second closest site

pin1356_19.03o

1-second rinex file.  Distant site

pomm356_19.03o

1-second rinex file. Third closest site (in the Park field area)

trak356_19.03o

1-seoncd distant site.  This site is about 300km from the earthquake and is used as the FIXED site.

mit12501.sp3

SP3 orbit file from the MIT IGS analysis center. (IGS sp3 file could also be used).

 

To run track using the above files:

 

track -f track.cmd -d 356_19 -w 12501 >! TRAK_356_19.out

 

Output files

Name

Type

TRAK_356_19.out

Screen output from track.  Captured output file with unix redirect

TRAK356_19.sum

Summary file that contains the main quality results from track including the parameters from the run, bias parameters and the resolved status and phase residual statistics.

TRAK356_19.NEU.crbt.LC

Position estimates as a function of time in the NEU systems: Site CRBT

TRAK356_19.NEU.lows.LC

Position estimates LOWS

TRAK356_19.NEU.pin1.LC

Position estimates PIN1

TRAK356_19.NEU.pomm.LC

Position estimates POMM

TRAK356_19.crbt.PRN04.LC

Phase residuals as function of time for site CRBT and PRN 04 (these are not generated unless the res_root command is included in the command file.  These files are generated for all sites except the reference site.  (Only the crbt files are included here).

TRAK356_19.crbt.PRN07.LC

Phase residuals PRN 07

TRAK356_19.crbt.PRN08.LC

Phase residuals PRN 08

TRAK356_19.crbt.PRN09.LC

Phase residuals PRN 09

TRAK356_19.crbt.PRN11.LC

Phase residuals PRN 11

TRAK356_19.crbt.PRN26.LC

Phase residuals PRN 26

TRAK356_19.crbt.PRN27.LC

Phase residuals PRN 27

TRAK356_19.crbt.PRN28.LC

Phase residuals PRN 28

TRAK356_19.crbt.PRN29.LC

Phase residuals PRN 29

 

Example plots of the position results are shown below.  These plots were generated with the shell script sh_plotSanSimeon.

Results for the 1-hour span of data (generated with sh_plottrack).

Zoom of the 300-seconds of data around the time of the earthquakes.  The oscillations are surface waves arriving at the different sites.