GAMIT, GLOBK, and TRACK form a comprehensive suite of programs for analyzing GPS measurements primarily to study crustal deformation. The software has been developed by MIT, Scripps Institution of Oceanography, and Harvard University with support from the National Science Foundation.

GAMIT is collection of programs to process phase data to estimate three-dimensional relative positions of ground stations and satellite orbits, atmospheric zenith delays, and earth orientation parameters. The software is designed to run under any UNIX operating system.

GLOBK is a Kalman filter whose primary purpose is to combine various geodetic solutions such as GPS, VLBI, and SLR experiments. It accepts as data, or "quasi-observations" the estimates and covariance matricies for station coordinates, earth-orientation parameters, orbital parameters, and source positions generated from the analysis of the primary observations. The input solutions are generally performed with loose a priori uncertainties assigned to all global parameters, so that constraints can be uniformly applied in the combined solution.

  • GAMIT - MIT Case No. 4116SJ

  • GLOBK - MIT Case No. 6533S

For more information about GAMIT or other software packages in the suite, visit Dr. Bob King's GAMIT-GLOBK page.

Ready to Sign License Available

Please visit our Ready to Sign instructions page to learn how to request a license. To obtain a commercial license for GAMIT, please click below to download the license as a fillable PDF: 

To obtain the software for academic and non-commercial purposes, email Dr. Bob King directly.

Questions? Contact the