Council on Scientific and Industrial Research (CSIR) Center for Mathematical Modeling and Computer Simulation (C-MMACS)


January 28-February 1, 2002

Banaglore, India


This is the web-based version of the course taught over a period of 5-days and gives an overview of processing Global Positioning System (GPS) data with the GAMIT/GLOBK package.  For questions contact


Course contents


Monday January 28

Lecture 1: Structure of GAMIT/GLOBK.  Overview of the uses of the two program packages    India_lec01.pdf           India_lec01.html

Lecture 2: Automatic GPS phase data processing with sh_gamit.       India_lec02.pdf      India_lec02.html

Lecture 3: User controllable files in GAMIT.  India_lec03.pdf           India_lec03.html

Lecture 4: Tutorial session in which sh_gamit is used to process data


Tuesday January 29

Lecture 5: Control and status files from GAMIT runs India_lec05.pdf      India_lec05.html

Lecture 6: Tuning the GAMIT data cleaning and cycle slip repair program AUTCLN      India_lec06.pdf           India_lec06.html

Lecture 7: Problems encountered in automatic data processing and some solutions       India_lec07.pdf           India_lec07.html

Lecture 8: Tutorial session aimed at running all of the three years of data with four days of data per annual experiment.


Wednesday January 30

Lecture 9: Analysis of the overnight runs.  Most common problem was not accounting for the antenna names in the rinex files (name given as unknown and guess_rcvant.dat file in templates needed to be modified to accept “unknown” to be a TRMDMG antenna.

Lecture 10: GLOBK theory and solution types.          India_lec10.pdf      India_lec10.html

Lecture 11: Applications of GLOBK and its ancillary programs         India_lec11.pdf      India_lec11.html

Lecture 12: Automatic processing with GLOBK: sh_glred.  Lecture run in tutorial mode with direct connection to C-MMACS computers. India_lec12.pdf      India_lec12.html


Thursday January 31

Lecture 13: GLOBK velocity solutions and use of GLORG to realize a coordinate system.      India_lec13.pdf           India_lec13.html

Lecture 14: Plotting and analysis programs used with GLOBK.         India_lec14.pdf      India_lec14.html

Lecture 15: Repeatability runs and summary programs.  This lecture was run directly connected to the C-MMACS o200 computer to look at the quality of the GLOBK repeatability runs.

Lecture 16: Tutorial session with students setting up final runs of GLOBK on data.  Some students also re-ran GAMIT with phase center models turned off, and other re-ran GAMIT using IGS orbits as apriori rather the SOPAC g-files that were used in the original runs


Friday      February 1

Lecture 17: Utility programs and scripts contained in ~/gg/com, ~/gg/kf/utils and ~/gg/gamit/utils.    India_lec17.pdf           India_lec17.html

Lecture 18: In class tutorial using the use of the utility programs to analyze the results from the analyses performed for the class.

Lecture 19: Kinematic processing program TRACK.  Class also included analysis of some of the data processed in the class with TRACK.    India_lec19.pdf      India_lec19.html

Lecture 20: Final wrap-up session with question and answer period.


Lectures given by:

Thomas A Herring

Professor of Geophysics

Room 54-618, MIT

77 Massachusetts Avenue

Cambridge, MA 02139

Phone 1-617-253-5941, Fax 1-617-253-1699



The class picture from the evening reception on Wednesday January 30: