Ka频段低轨卫星跟踪方式研究  

Research on Tracking Methods of Ka-band LEO Satellite

作　　者：谢学东[1] 操礼长 刘旺华[1] 朱志勇[1] XIE Xuedong;CAO Lichang;LIU Wanghua;ZHU Zhiyong(Unit 61112,PLA,Mudanjiang 157011,China;Xi＇an Satellite Control Center,Xi＇an 710043,China)

机构地区：[1]中国人民解放军61112部队 [2]西安卫星测控中心

出　　处：《无线电工程》2018年第11期77-81,共5页Radio Engineering

摘　　要：随着遥感技术的不断发展,遥感数据量与日俱增,卫星平台设计要求的传输速率和带宽越来越高。但是目前的传输信道已经饱和,无法满足更高速率的数据下传。综合考虑采用逐步成熟的Ka频段代替目前的X频段,但是遥感卫星的高度一般较低,Ka频段信号的跟踪方式将成为关键问题。在分析对比目前的跟踪条件的基础上,提出了一种适合新一代天线系统的跟踪解决方法,从跟踪环路设计方面论证了解决方案。仿真结果表明,积分式PID控制器可以满足低轨卫星的跟踪,实现Ka频段低轨卫星的稳定跟踪,提高了遥感卫星使用效率。With the development of remote sensing technology and increasing of the amount of remote sensing data,the requirements of transmission rate and bandwidth for satellite platform design are increasingly higher.However,the current transmission channel is already saturated,unable to satisfy the higher rate of data. The gradual maturation of Ka band instead of current X band is taken into account,but the height of the remote sensing satellite is generally low,and tracking of Ka-band signal will be a key issue.Based on the analysis and comparison of the current tracking conditions,this paper presents a tracking solution for the new generation of antenna systems.The solution is demonstrated from the aspects of tracking loop design.The simulation results show that the integral PID controller can meet the requirements of LEO satellite tracking,realize the stable tracking of Ka-band LEO satellites and improve the utilization efficiency of remote sensing satellites.

关 键 词：KA频段 稳定跟踪 低轨卫星 

分 类 号：TN927[电子电信—通信与信息系统]