SALT Orbit Determination Covariance Analysis Using GPS Tracking Open PDF Document Details Document Type Technical Report Publication Date Jun 15, 1991 Accession Number ADA237899 Entities People George Born Kristine Larson Peter Macdoran Scott Pogorele Tags DTIC Thesaurus Topics Accuracy Algorithms Artificial Satellites Cartesian Coordinates Earth Models Errors Frequency Global Positioning Systems Ground Stations Jet Propulsion Measurement Models Orbits Simulations Solar Radiation Spacecraft Tracking Stations Technology Areas Space Space - Orbital Debris