深空测控系统中的射电星校相方法  

Research on Phase Calibration Using Radio Star for Deep Space TT&C System

作　　者：李蝉[1] 刘敏[1] 于益农[1] 

机构地区：[1]北京跟踪与通信技术研究所

出　　处：《飞行器测控学报》2009年第6期28-30,共3页Journal of Spacecraft TT&C Technology

摘　　要：深空测控系统要求具有角度自跟踪功能,而和差双通道跟踪体制下测控设备在任务前需要进行校相。传统校相依赖标校塔,深空测控系统天线口径大,无法建造满足远场条件的标校塔,从而只能采用其他校相方案。本文通过分析校相过程的机理,并结合射电星具有全天候、分布广、星历精确已知的特点,得到了利用射电星校相的方法。通过前期大量试验证明了该方法的可行性,并已确定应用于深空测控系统的研制。Deep space TT&C system needs to have the capability of angle tracking.As a sum-differential dual channel tracking system,it must calibrate phase before starting a TT&C mission.Traditional phase calibration relies on tower.Because of its big aperture,it's impossible to build a calibration tower which satisfies the far-field condition.From analysing the theory of phase calibration and combining the characteristics of radio-star that is all-weather,wide-area and precisely calibrated ephemeris,this papar implements a phase calibration method using radio star.That method is proved feasible by prophase experiments,and it has been developed in deep space TT&C system.

关 键 词：深空测控系统 角跟踪 射电星 校相 

分 类 号：V447.1[航空宇航科学与技术—飞行器设计]