Analysis of Deep-space Spacecraft Navigation Based on GNSS Weak Signals with Lunar Relay Satellite Signals
摘要：According to the applying needs of autonomous navigation in Earth-Moon transfer orbits probe program, we study the scheme of autonomous navigation based on GNSS weak signals by taking the ‘Chang e NO.1’ as an example. And we analyze the different styles of joint-constellation on the coverage navigation signals from the view point of engineering application Since the effective coverage for the whole transfer process can be achieved only based on GNSS, we navigation scheme by introducing lunar relay satellites signals.The simulations show that effective coverage ratios for three GTO orbits in the transfer process are all above 60%combined signals from GNSS with fully used side lobe signals of them. The coverage property has been further improved by introducing the lunar relay signals into GNSS system.s in China’s Lunar autonomous navigation ak signals by taking the transfer process of as an example. And we analyze the influence of coverage of from the view point of engineering application. Since the effective coverage for the whole transfer process can’t further discuss the signals. ocess are all above 60% based on with fully used side lobe signals of g the lunar relay signals into GNSS system.
2015 6th IEEE International Conference on Software Engineering and Service Science（ICSESS 2015）