Semi-dynamical Doppler satellite positioning

Computer Science

Scientific paper

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Scientific paper

In semi-dynamical satellite geodesy, the satellite orbit is determined beforehand by dynamical methods, and tracking station coordinates are determined geometrically from satellite observations and the accepted satellite coordinates. This paper analyzes the use of the U.S. Navy Navigational Satellite Doppler (formerly Transit) system in the semidynamical mode, presenting some test network numberical results. Three error sources are considered: errors in the satellite coordinates, refractive errors on the Doppler observations, errors contributed by the tracking receivers. Compensatory techniques are discussed, such as relaxing the satellite orbit, ionospheric and tropospheric refraction reductions, tracking receiver time recovery, translocation.

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