嫦娥五号任务再入返回段测控总体设计与实现  

Design and Implementation of TT&C Scheme of Reentry and Return Phase of the Chang’e-5 Mission

作　　者：胡浩 董光亮[2] 裴照宇 李海涛[2] 黄磊[2] 任俊杰 葛平 陈少伍[2] 樊敏[2] HU Hao;DONG Guangliang;PEI Zhaoyu;LI Haitao;HUANG Lei;REN Junjie;GE Ping;CHEN Shaowu;FAN Min(Lunar Exploration and Space Engineering Center,Beijing 100190,China;Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China)

机构地区：[1]探月与航天工程中心,北京100190 [2]北京跟踪与通信技术研究所,北京100094

出　　处：《宇航学报》2023年第5期670-676,共7页Journal of Astronautics

基　　金：国家中长期科技发展规划(2006-2020)重大专项(探月工程)资助项目。

摘　　要：针对探月工程三期嫦娥五号任务再入返回段测控任务要求,梳理出轨返分离点测定轨预报、轨返分离前天地校时、初次再入及二次再入关键任务弧段的跟踪测控等主要技术难题,并给出了相应的解决方案,确保了在轨道器与返回器分离(轨返分离)前定轨并预报1 h至分离点,径向、切向和法向三个方向上的位置精度均优于1000 m,速度精度均优于0.5 m/s的测定轨预报要求以及1 ms的校时精度要求,构建了几乎连续覆盖的再入返回测量链,并通过获取的各类遥外测数据对返回器落点进行了预报,精度为1 km量级。任务实践充分表明,测控系统的方案稳妥可靠,有效确保了任务的圆满成功,并可为后续开展小行星采样返回、火星采样返回等任务提供重要技术参考。In view of the TT&C requirements of reentry and return phase of the Chang’e-5 mission of the third phase of China Lunar Exploration Program,the main technical problems such as orbit determination and prediction of the separation point of the orbiter and the reentry module,timing precision before the separation,and TT&C of key tracking pass of the first and second reentry are sorted out.Corresponding solutions are given as well.In radial,tangential and normal directions,the position accuracy of each direction is better than 1000 m,and the velocity accuracy of each direction is better than 0.5 m/s,,and the accuracy of time correction are better than 1 ms before the separation of the orbiter and the reentry module.The reentry and return measurement chain with almost continuous coverage is constructed,and the landing point of the reentry is predicted with the accuracy of 1 km by all kinds of telemetry and tracking data.The practice of the mission fully shows that the TT&C system scheme is reliable,effectively ensures the complete success of the mission,and can provide important technical reference for the follow-up asteroid sampling return and Mars sampling return missions.

关 键 词：嫦娥五号 再入返回 测控 探月工程三期 

分 类 号：V556[航空宇航科学与技术—人机与环境工程]