Abstract:This paper focusses on the five factors that affect the accuracy and timeliness of orbits, including the ambiguity fixed of different types of satellites, the number of regional ground monitoring stations, the length of the observation data arc, the selection of solar pressure perturbation model and multi-system combination orbit determination, and analyzes the optimal strategy of orbit determination under regional station distribution. The experimental results show that selecting 27 uniformly distributed ground area monitoring stations in China, using 72 h arc length of the BDS/GPS multi-system observation data, and adopting the ECOM 5 parameters model of the solar pressure perturbation, can achieve better orbit accuracy. The accuracy of the GEO satellite orbit is about 291 cm, and the accuracy of the IGSO/MEO satellite is better than 11 cm. If the above strategy is used for BDS single system orbit determination, GEO satellite 299 cm and IGSO/MEO satellite 14.4cm orbit accuracy can be achieved.
WANG Le,HUANG Guanwen,ZHANG Qin et al. Analysis of Strategy of BDS Satellite Orbit Determination using Regional Monitoring Stations[J]. jgg, 2018, 38(5): 497-503.