CE-5器间分离的同波束干涉测量的准实时监测法

doi:10.11947/j.AGCS.2019.20180351

测绘学报 ›› 2019, Vol. 48 ›› Issue (10): 1216-1224.doi: 10.11947/j.AGCS.2019.20180351

CE-5器间分离的同波束干涉测量的准实时监测法

高云鹏¹, 任天鹏², 杜兰^1,3, 陈思睿¹, 张中凯¹

1. 信息工程大学, 河南郑州 450001;
2. 北京航天飞行控制中心, 北京 100094;
3. 上海市空间导航与定位技术重点实验室, 上海 200030

收稿日期:2018-07-20 修回日期:2019-01-11 出版日期:2019-10-20 发布日期:2019-10-24
通讯作者: 杜兰 E-mail:dulan2015@qq.com
作者简介:高云鹏(1993-),男,硕士生,研究方向为空间大地测量与导航。E-mail:gaoyp12@qq.com
基金资助:
国家自然科学基金（41774038；41804034）；上海市空间导航与定位技术重点实验室开放基金（KFKT_201707）

Quasi real-time monitoring of CE-5 inter-device separation based on same-beam interferometry

GAO Yunpeng¹, REN Tianpeng², DU Lan^1,3, CHEN Sirui¹, ZHANG Zhongkai¹

1. Information Engineering University, Zhengzhou 450001, China;
2. Beijing Aerospace Control Center, Beijing 100094, China;
3. Shanghai Key Laboratory of Space Navigation and Positioning Techniques, Shanghai 200030, China

Received:2018-07-20 Revised:2019-01-11 Online:2019-10-20 Published:2019-10-24
Supported by:
The National Natural Science Foundation of China (Nos. 41774038;41804034);The Open Fund of Shanghai Key Laboratory of Space Navigation and Positioning Techniques (No. KFKT_201707)

摘要/Abstract

摘要： “嫦娥5号”探测器的组成包括轨道器、返回器、着陆器和上升器。在环月阶段，两个组合体（轨道器/返回器组合体和着陆器/上升器组合体）之间的分离实时监测，是飞行控制的关键检测段。本文提出利用甚长基线干涉测量（VLBI）测轨技术实现绕月探测器器间分离实时监测。特别是在器间分离前后，本文方法能够利用探测器器间两路下行信号进行同波束干涉测量（SBI），差分时延测量能够提高器间相对距离的解算精度。单基线试验分析表明，本文方法基于实测数据的“嫦娥3号”着陆器两天线的相对距离解算精度优于0.3 m，平均相对距离误差约为0.15 m，基于“嫦娥5号”仿真数据的双阈值判定对器间分离监测的响应时延优于30 s。

关键词: 同波束干涉测量, 嫦娥五号, 相对距离, 单点解算

Abstract: The lunar spacecraft Chang'E-5 includes the orbiter, the returner, the lander and the riser. During the round-moon flight phase, the real-time monitoring of separation between two combinations, the orbiter/returner assembly and the lander/riser assembly, is the key detection section of flight control. It is proposed that a nearly real-time separation monitoring by using very long baseline interferometry (VLBI) technology. Particularly, during the separation process, the state-of-art measuring technique of same-beam interferometry (SBI) can be obtained from the downlink signals transmitted from the different antennas of the two assemblies, and the resulting relative phase delay can improve the relative distance resolution. The Chang'E-3 static test shows that the relative distance between the two antennas of its lander is solved with the accuracy of <0.3 m with the SBI measurements on a single baseline and the average error is about 0.15 m. The simulated Chang'E-5 separation shows that the separation response time based on SBI measurements is determined with double thresholds with a delay of no more than 30 s.

Key words: same-beam interferometry (SBI), Chang'E-5, relative distance, single point solution

中图分类号:

P228

高云鹏, 任天鹏, 杜兰, 陈思睿, 张中凯. CE-5器间分离的同波束干涉测量的准实时监测法[J]. 测绘学报, 2019, 48(10): 1216-1224.

GAO Yunpeng, REN Tianpeng, DU Lan, CHEN Sirui, ZHANG Zhongkai. Quasi real-time monitoring of CE-5 inter-device separation based on same-beam interferometry[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(10): 1216-1224.

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CE-5器间分离的同波束干涉测量的准实时监测法

Quasi real-time monitoring of CE-5 inter-device separation based on same-beam interferometry

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