Research on CE-5' Dual-target Joint Orbit Determination Technology

Based on CE-5' dual-target joint measurement, we established the same beam measurement and inter-satellite measurement model, and designed a statistical orbit determination algorithm combined with orbiter and ascender. We used the reference orbit to analyze delay and delay rate accuracy of the same beam measurement, and the range and range data accuracy of microwave radar/laser radar. The accuracy of the same beam measurement is equivalent to that of VLBI measurement, and the range accuracy of microwave radar/laser radar is at meter level. By establishing the relative motion relationship between the two targets, the relative orbit accuracy can be significantly improved in orbit determination.