摘要
针对卫星导航长时间模拟测试中的星座轨道与实际卫星偏差逐渐变大的问题,分析并评估了已有的几种关于星座轨道外推的算法,研究了影响轨道外推的几个要素,提出了基于高精度积分器的星座轨道外推方法并进行了仿真分析。基于北斗多轨道混合星座模拟器的需要,给出了适用于混合星座的轨道外推设计,通过仿真确立了针对混合星座轨道的积分方法,开展了外推验证并与成熟商业星座仿真软件进行了对比分析。结果表明,在保证长时间连续仿真的前提下实现了针对卫星导航模拟器的高精度混合星座轨道外推,精度与STK软件仿真结果相当。
For the problem that the constellation orbit and the actual satellite deviation become larger gradually in the long timesimulation test of satellite navigation,the existing methods of constellation orbit extrapolation are analyzed and assessed. Research on the parameters which influence orbit extrapolation is performed. In view of the satellite navigation simulator multi-orbit characteristic,based on high-accuracy integrator,the research and analysis of constellation orbit extrapolation method are completed. The integrator method for hybrid constellation is established,and extrapolation tests are carried out and compared with mature commercial software. The results show that the high precision hybrid constellation orbit extrapolation for the satellite navigation simulator is realized under the premise of long time continuous simulation,and the accuracy is equivalent to that of the STK software.
出处
《无线电工程》
2018年第2期126-131,共6页
Radio Engineering
基金
国家重点研发计划基金资助项目(2016YFB0502402)
关键词
轨道外推
导航模拟器
北斗系统
卫星导航
orbit extrapolation
navigation simulator
BDS
satellite navigation
