摘要
在卫星导航系统地面控制系统中转台天线是关键设备,为提升测量型转台天线的测量性能,需要选择优化的天线跟踪方式。转台天线典型的跟踪方式可分为步进跟踪、单脉冲跟踪和程序跟踪等。分析了转台天线几种跟踪方式的优缺点,结合卫星导航系统的应用特点,提出了2种转台天线组合跟踪方式:程序跟踪引导的单脉冲跟踪方式和单脉冲跟踪辅助的程序跟踪方式。试验表明,当卫星星历精度不高或无法稳定获得时,适合采用程序跟踪引导的单脉冲跟踪方式,当可稳定获得精密星历时适合采用单脉冲跟踪辅助的程序跟踪方式,2种方式均可实现高精度跟踪。
The antenna is the key equipment in the ground control system of the satellite navigation system.In order to improve the measurement performance of the antenna, it is necessary to optimize the antenna tracking mode. The typical tracking modes of the turntable antenna can include step tracking, monopulse tracking and program tracking. This paper analyzes the advantages and disadvantages of several antenna turntable tracking modes.Combining with the characteristics of satellite navigation system ,two kinds of antenna turntable combined tracking are put forward, such as tracking program guide single pulse tracking mode and single pulse tracking aided program tracking mode.The verification test results show that tracking program guide single pulse tracking mode can be used when the satellite ephemeris accuracy is not high or can＇ t be obtained,the single pulse tracking aided program tracking mode can be used when the stable precise ephemeris is obtained ,and these two modes can implement high-precision tracking.
出处
《无线电工程》
2017年第6期41-44,共4页
Radio Engineering
关键词
卫星导航
转台天线
组合跟踪
satellite navigation
turntable antenna
integrated navigation
