摘要
实现了基于一发多收模式的地球同步轨道卫星精密测定轨,一发多收测轨模式是转发式测定轨技术中一种观测模式。测轨站主站向卫星发射一个伪码扩频信号,经卫星转发器转发,传向主站和副站,形成主站的自发自收和副站的主发副收的测轨模式。并依托中国科学院国家授时中心的西安站、长春站和喀什站开展C波段一发多收观测定轨试验。主站的发射系统时延和卫星转发器的时延可以通过解算中的参数估计予以解算,副站的系统误差经标校方法抵消其影响。试验以自发自收的定轨结果评估一发多收的定轨精度,结果表明一发多收定轨精度可达10 m量级,也说明一发多收观测模式是一种有效的精密测定轨方法。
A method of orbit determination for GEO(geosynchronous orbit) satellites has been implemented, the observation mode that multi-receivers received a signal from main station has been used, which is one observation mode of the ODTT(orbit determination by transfer tracking) technique. In this mode, a pseudo-code spread spectrum signal is transmitted to the satellite by the main station, this signal is transferred to the ground via transponder. And then, every stations include the main station received the signal. A experiment has been carried out using three stations which located at Xi’an, Changchun and Kashi, the time delay of main station and satellite transponder can be solved with orbit determination, the time delay of other stations has been calibrated. The precision of orbit determination for this mode is about ten meters, which assessed by the result of roundtrip mode. The result shows that this observation mode is also valid for precise orbit determination.
作者
刘凯
杨旭海
陈亮
韦沛
成璇
曹芬
南凯
LIU Kai;YANG Xu-hai;CHEN Liang;WEI Pei;CHENG Xuan;CAO Fen;NAN Kai(National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China;Key Laboratory of Precise Navigation and Timing Technology,Chinese Academy of Sciences,Xi'an 710600,China;Xi'an Electronic and Science University,Xi'an 710071,China;Shaanxi Provincial Institute of Measurement and Control and Data Transmission Technology for Commercial Satellite,Xi'an 710065,China)
出处
《时间频率学报》
CSCD
2019年第4期357-366,共10页
Journal of Time and Frequency
基金
国家自然科学基金资助项目（11173026）
载人航天预研资助项目（0602）
关键词
转发式测定轨
一发多收模式
自发自收模式
精密定轨
地球同步轨道卫星
orbit determination by transfer tracking (ODTT)
observation mode with multi-receivers received same signal
roundtrip mode
precise orbit determination(POD)
geosynchronous orbit(GEO) satellites
作者简介
刘凯,男,硕士研究生,主要从事卫星精密测定轨与导航定位研究。
