摘要
航天测量船与陆基测控站在对航天器进行轨道跟踪测量中存在很大区别,陆基测控站是定点测控,定轨精度完全取决于无线电设备自身精度,而测量船是海基动态测控,定轨精度除受无线电设备自身精度影响,更大程度上受制于惯性导航系统(INS)提供的船姿船位(航向、船摇、位置)数据精度。测量船为提高船姿船位数据精度,使用了静电陀螺监控器(ESGM)与惯性导航设备(INS)、全球卫星导航系统(GNSS)相结合的组合导航系统。结合INS/ESGM/GNSS工作原理和测量船航天器定轨中船姿船位数据源的选择,将船姿船位数据精度对测量船定轨精度的影响进行了仿真,并通过无线电设备实测数据的事后数据处理对仿真结果进行了验证。研究结果表明,ESGM能够在很大程度上提高测量船航天器的定轨精度。
There was a big difference between TTC-ship and ground control station in tracking a spacecraft orbit. The ground control station is static, and its orbit determination precision depends entirely on its radio equipment. While the TTC-ship is dynamic, and its precision is determined more by the ship attitude precision than by its radio equipment. In order to improve the ship attitude＇s measurement precision, an integrated INS/ESGM/GNSS navigation system is applied on TTC-ship. According to the operation principle of the system and the data source selection during measurement of spacecraft orbit determination on TTC-ship, a simulation is made to analyze the ship attitude data precision＇s influence on the orbit determination precision. Simulations by the measured data of radar verify that the precision of spacecraft orbit determination is significantly improved by the data processing, showing that the TTC-ship orbit determination precision can be improved by the ESGM.
出处
《中国惯性技术学报》
EI
CSCD
北大核心
2016年第1期6-8,25,共4页
Journal of Chinese Inertial Technology
关键词
静电陀螺监控器
组合导航
数据仿真
定轨精度
electrostatic supported gyro monitor
integrated navigation system
date simulation
orbit determination precision
