The Optimal Distribution Strategy of BeiDou Monitoring Stations for GEO Precise Orbit Determination
The accuracy of BeiDou GEO satellites precise orbit determination is poor. In addition to high altitude and constant position, the monitoring stations distribution is also an important factor of GEO satellites orbit determination. Firstly, the basic principle of geometry orbit determination is introduced and the observation equation is linearized in this paper. Secondly, The GDOP value is parameterized by using orthogonal trigonometric functions. Thirdly, the relationship between stations distribution and the accuracy of precise orbit determination is analyzed according to nested cones. Finally, the simulation experiments are carried out, and a kind of the optimal solution is concluded.
KeywordsGEO Nested cones GDOP Monitoring stations distribution
This study is funded by the National Natural Science Fund (41404034) and the International GNSS Monitoring and Assessment System (GFZX0301040308-06). This work is also supported by the national science and technology supporting plan (2012BAB16B01), the fundamental research funds of Chinese Academy of Surveying and mapping (7771405/7771416)and the Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Administration of Surveying, Mapping and Geoinfomation (2013B01).
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