Research in Geodesy Based Upon Radio Interferometric Observations of GPS (Global Positioning System) Satellites.
Final rept. 5 Feb 82-31 Dec 85,
MASSACHUSETTS INST OF TECH CAMBRIDGE
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MIT explored and extended the capabilities of the new technique of geodesy by radio interferometry using signals from the NAVSTAR Global Positioning System GPS satellites. Accuracy in the determination of long relative-position, or baseline, vectors between fixed points on the earth was improved by the use of doubly differenced, dual frequency LI and L2 band. Carrier phase observations, and by determining the orbits of the satellites from observations at widely spaced sites whose relative positions were well known a priori from quasar observations. Accuracy of about 1 part in 10 million of the length of a long baseline, and 1 millimeter for a short baseline, was achieved. Keywords Geodetic survey Geodetic control VLBI Very Long Baseline Interferometry Satellite geodesy Satellite tracking Satellite orbits Orbit determination.
- Navigation and Guidance
- Radiofrequency Wave Propagation