Chang'E-4 will have a soft landing on the far-side of the moon for the first time.The tracking and data transmission for Chang'E-4 will depend on a tracking and data relay satellite on a Lissajous orbit around the Earth-Moon L2 point,and four-way ranging measurement is expected to be obtained.The capability of orbit determination for Chang'E-4 is studied by simulation.The results show that a tracking and data relay satellite can realize a near full time tracking for the lunar probe.In terms of orbit determination capability,the orbital accuracy of tracking and da ta relay satellite is an important constraint.Once the tracking arc reaches 5 hours,the orbit solution for the lunar probe tends to be stable.However,orbital accuracy is still one order of magnitude lower than that of tracking and data relay satellite.For inter-satellite tracking,the stability of the satellite clock is another constraint.With one hour auxiliary ground station tracking every day,an orbital accuracy of 100 m can be achieved.
Tracking and Data Relay Satellite (TDRS)lunar probeinter-satellite linkorbit determination
NETL
NSTL
维普
万方数据
