【作者】 李辉；

【导师】 周彩根；

【作者基本信息】 北京邮电大学 ， 计算机科学与技术， 2008， 硕士

【摘要】 针对基于高轨卫星的对非合作低轨卫星的无源定轨问题,论文分析并实现了两种定轨方法,即仅使用角度信息的方法和基于角度和频率信息的方法,并实现了针对此问题的定轨仿真环境。在此基础上,论文分析了测角精度、初始状态误差和测频精度对两种方法性能的影响,并进而对两种方法的性能进行了对比分析。经过计算机仿真实验表明,在保证一定的测量精度的情况下,仅使用角度信息的方法和基于角度和频率信息的方法都是可行的。在两种方法中,都应当尽量提高测角精度,并把初始状态误差控制在一定范围内,以提升算法性能。而对于基于角度和频率信息的方法应尽量提高测频精度,以提升算法性能。在相同的观测精度条件下,基于角度和频率信息的方法性能优于仅使用角度信息的方法。更多还原

【Abstract】 To the HEO-to-LEO passive locating problem, this paper analyses and realizes two passive locating methods: the method using bearing-only measurement and the method using bearing and frequency measurements. And then it realizes the passive locating software to the problem. After this work, the paper analyses some factors, such as the precision of bearings measurement and the precision of frequency measurement, which can influence the performance of the two methods. And then it compares the performance of the two methods.Computer simulation indicated that it is possible to track LEO by HEO using the two methods when the precision of measurement can be guaranteed. In the two situations, the precision of bearings measurement and the precision of frequency measurement should be guaranteed to improve the performance of the two methods. In the same precision of measurement, the performance of the method using bearing and frequency measurements is better than the method using bearing-only measurement.更多还原