To this end, JPL developed an innovative software program called the GPS (global positioning system)-Inferred Positioning System and Orbit Analysis Simulation Software, abbreviated as GIPSY-OASIS, to process and calculate data to determine a spacecraft’s position.

The National Aeronautics and Space Administration (NASA) Jet Propulsion Laboratory (JPL) in Pasadena, California, provides user support for GIPSY - OASIS (GOA II), an automated, fast, ultra-precise high precision GPS data processing software package with strict data quality control.

GIPSY-OASIS is widely used for geophysical and global positioning system research. This software is only available for use by federal employees and contractors to the federal government working on projects where this tool would be applicable.