GEOSYNCHRONOUS ORBIT DETERMINATION USING SPACE SURVEILLANCE NETWORK OBSERVATIONS AND IMPROVED RADIATIVE FORCE MODELING - RESULTS OF REAL DATA PROCESSING

摘要

This study is intended to improve orbit determination accuracy for 3-axis stabilized geosynchronous satellites via an improved radiative force model. The macro-model approach, developed earlier at NASA GSFC for the TDRSS spacecraft, has been adapted for the UNIX version of the Goddard Trajectory Determination System (GTDS) at the MIT Lincoln Laboratory. This paper describes software development and testing, including incorporation of a single-panel spacecraft model along with the full macro-model. Additionally, this paper describes a macro-model for the NASA Geosynchronous Operational Environmental Satellites (GOES) spacecraft. Finally, this paper presents initial results of processing the real observation data from the Space Surveillance Network using the macro-model for both the TDRSS and GOES spacecraft. For the GOES-10 spacecraft, NOAA ranging data is also included in some of the tests.