NASA - National Aeronautics and Space Administration

The Global Positioning System Payload (GPSP), provided by NASA, is a tracking system that enhances DORIS measurements by using triangulated data from the U.S. Global Positioning System constellation of navigation satellites to determine the satellite's precise position in orbit. It is nearly identical to the Turbo Rogue Space Receiver on Jason-1. Its data are used to continuously track the satellite's trajectory.

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