探月卫星同波束干涉测量技术应用研究

韩松涛; 陈明; 李翠兰; 路伟涛

doi:10.11999/JEIT180914

探月卫星同波束干涉测量技术应用研究

doi: 10.11999/JEIT180914

韩松涛^{1, 2, ,},
陈明¹,
李翠兰¹,
路伟涛¹

1.
北京航天飞行控制中心航天飞行动力学技术重点实验室北京 100094
2.
中国科学院国家天文台北京 100012

基金项目: 国家自然科学基金(11603001, 11833001)

详细信息

作者简介:
韩松涛：男，1982年生，博士后，研究方向为深空探测轨道测量

陈明：男，1974年生，研究员，研究方向为航天器测定轨技术

李翠兰：女，1979年生，高级工程师，研究方向为航天器测定轨技术

路伟涛：男，1985年生，助理研究员，研究方向为深空无线电测量

通讯作者:
韩松涛　justdoit_doing@126.com

中图分类号: TN961
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- 被引次数: 0
出版历程
- 收稿日期: 2018-09-14
- 修回日期: 2019-01-28
- 网络出版日期: 2019-02-18
- 刊出日期: 2019-08-01

Research on Application of Same-beam Interferometry in China Lunar Exploration

Songtao HAN^{1, 2
, ,},
Ming CHEN¹,
Cuilan LI¹,
Weitao LU¹

1.
National Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing Aerospace Control Center, Beijing 100094, China
2.
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

Funds: The National Natural Science Foundation of China (11603001, 11833001)

摘要

摘要: 探月工程嫦娥4号中继星任务同时搭载月球轨道微卫星，受地面测控资源分配限制，微卫星的轨道测量由地基S/X频段统一测控(TT&C)系统天线(USB)保障。该文通过分析地月转移轨道段中继星、微卫星相对于跟踪测站的几何构型，依托深空干涉测量系统设计实现对微卫星、中继星的同波束干涉测量(SBI)跟踪；发挥中继星测控资源丰富、轨道精度高的优势，获取了微卫星优于1 ns的测角观测量；并应用于微卫星短弧定轨，统计分析表明定轨精度由2 km提升至优于1 km、预报精度由6 km提升至2 km，为微卫星轨道机动后的快速高精度轨道确定与预报提供了有力支撑。
- 同波束干涉测量 /
- 短弧定轨 /
- 深空测控干涉测量系统 /
- 嫦娥4号
Abstract: Because of restricted earth-based tracking network, Tracking, Telemetry and Command (TT&C) for lunar orbit micro-satellite is depended on Unified S/X Band (USB) antennas in China Chang’E-4 lunar exploration. Based on analysis of the geometry between relay satellite, micro-satellite and earth-based antennas during earth-moon transfer orbit, an applicable method to acquire delay observable through Same-Beam Interferometry (SBI) tracking by China deep space network is discussed. Benefited from more kinds of tracking resources and high accuracy orbit of relay satellite, delay observable for angular position measurement of micro-satellite in the order of 1 ns is obtained, which improves the micro-satellite orbit determination accuracy from 2 km to less than 1 km and improves orbit prediction accuracy from 6 km to 2 km. SBI tracking plays an important role in short arc orbit determination of micro-satellite.
- Same beam interferometry /
- Short-arc orbit determination /
- Deep space Tracking Telemetry and Command Interferometric system /
- Chang’E-4

HTML全文

图 1 SBI测量原理示意图

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图 2 跟踪弧段内两目标角距

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图 3 喀什深空站接收两目标信号频谱

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图 4 基于先验引导模型的干涉相位及残余时延

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图 5 定轨残差图

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图 6 定轨精度比较

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图 7 预报比较结果图

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