SOPAC: GAMIT Setup Information and Input Files

GAMIT Setup Information and Input Files

GAMIT and GLOBK are a comprehensive suite of programs developed by MIT, Scripps Institution of Oceanography, and Harvard University for analyzing GPS measurements primarily to study crustal deformation. The GAMIT home page is available.

The SOPAC data archive GAMIT directory contains all of the setup files listed below.

SOPAC Global and Regional Site Network GAMIT Input Files

map showing sites in SOPAC's processing networks

site lists:
Global networks are dynamically created each day based on RINEX file availability from: itrf2005good.txt, collocFull.txt, and tigaFull.txt.

Regional networks: akd1 akd2 akd3 ban1 ban2 ban3 ban4 bar1 bar2 bar3 bar4 bar5 bar6 bar7 ebr1 ebr2 emed eura net1 net2 net3 net4 net5 net6 net7 net8 net9 neta netb neu1 nwu1 pan1 pan2 pan3 pan4 pan5 seu1 swu1

station.info Resources

station.info is the gps site equipment setup file used by gamit

Produce your own site/day specific station.info from the command line, by providing four-character site codes and a valid date (multiple site=xxxx key/value pairs may be used):
-> wget "http://sopac.ucsd.edu/cgi-bin/procInputMetadata.cgi?site=pin1&date=20030101&format=station_info" -O station.info

GPS processing metadata xml files for western North America sites and global sites generated daily (note: large size). Note: SOPAC-processed sites only.

The procInput.xsd xml schema that the above xml files conform to

Up-to-date IGS antenna and receiver code xsd schemas. These are also generated daily, and are used as part of the main xml schema above.

station.info is created daily from the above global site xml file. Note: SOPAC-processed sites only.

The xslt stylesheet used to create station.info from the xml file (note: a perl wrapper script is used in addition to the stylesheet, for gamit firmware translation only)

station.info (direct from SOPAC DB) html ftp

ITRF 2000 Reference Frame Files

ITRF 2000 reference frame files are apriori coordinate files, and are described in IGS MAIL message 4642)

SOPAC uses the refined model to create its apriori coordinates and constraints for all sites (including core reference frame sites) in its daily GAMIT processing. (SOPAC's weekly GLOBK solutions do use the official core site coordinates and constraints). Use the coordinate request utility to create a file of apriori coordinates for the epoch (year/day) of interest, directly generated from the model.

itrf2000_core html ftp
Description: these are the official ITRF2000 version 2 (IGB00 realization of ITRF2000) core site apriori coordinates and velocities. ITRF2000 version 2 became the official IGS reference frame from beginning on GPS week 1253 (01/11/2004).

itrf2000_2001_rfwg.refined html ftp
Description: this file contains the above set of core sites, and all other sites ever processed at SOPAC. Non-core sites are updated daily using the SOPAC refined model.

sittbl. is the site constraints file used by gamit

sittbl.refined html ftp
Note: created using the SOPAC refined model

Receiver and Antenna tables

rcvant.dat html ftp

antmod.dat html ftp

antmod.dat.oldfmt html ftp

igs_05.atx (absolute antenna phase centers) html ftp

sestbl is the session table used by gamit. It contains configuration parameters for the gamit run.

sestbl.global html ftp

sestbl.regional html ftp

Earth Orientation Parameters (EOP's)

multi-year EOP files:

pmu.bull_f html ftp
pmu.bull_a html ftp
poleut.iris html ftp

UT1 (ut1.usno) html ftp

POLE (pole.usno) html ftp

Solar, Lunar, Nutation, Leap Second Tables

SOLAR Tables

2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

LUNAR Tables

2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985

NUTATION Tables

2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986

leap.sec (leap second file)

leap.sec html ftp