Abstract In the autonomous orbit determination, we need EOP uploaded by ground station to achieve translation of Conventional Terrestrial System and Geocentric Celestial Reference System. However, when the satellite navigation system gets into autonomous navigation mode, the ground station can not upload the latest EOP, the system can only use longterm prediction of EOP. EOP prediction error will affect the ephemeris offered by the autonomous navigation system, and ultimately affect positioning accuracy of users. EOP prediction errors, the influence of EOP prediction errors to autonomous navigation system orbit ephemeris and positioning accuracy of users are discussed and analyzed. The results show that the prediction error of EOP almost has no influence on the radial error of satellite orbit and satellite clock error in long-term (110 days) autonomous orbit determination. It mainly influences the Plane Error (Along Error and Cross Error) and URE (User Range Error) and these errors show a certain periodicity. Moreover, these errors mainly influences NorthSouth direction error and EastWest direction error in pseudorange positioning.
Zhang Weixing,Liu Wanke,and Gong Xiaoying. ANALYSIS OF INFLUENCE OF EOP PREDICTION ERROR ON AUTONOMOUS ORBIT DETERMINATION[J]. , 2011, 31(5): 106-110.
Zhang Weixing,Liu Wanke,and Gong Xiaoying. ANALYSIS OF INFLUENCE OF EOP PREDICTION ERROR ON AUTONOMOUS ORBIT DETERMINATION[J]. jgg, 2011, 31(5): 106-110.
