gama

GNU Gama is a project dedicated to adjustment of geodetic
networks. It is intended for use with traditional geodetic
surveyings which are still used and needed in special measurements
(e.g., underground or high precision engineering measurements)
where the Global Positioning System (GPS) cannot be used.
Adjustment in local Cartesian coordinate systems is fully
supported by a command-line program gama-local that adjusts
geodetic (free) networks of observed distances, directions,
angles, height differences, 3D vectors and observed coordinates
(coordinates with given variance-covariance matrix). Adjustment in
global coordinate systems is supported only partly as a gama-g3
program.

          

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License: GPL-3.0-or-later
URL: https://www.gnu.org/software/gama/