深空探测器同波束相位参考成图相对定位方法

doi:10.11947/j.AGCS.2015.20140240

测绘学报 ›› 2015, Vol. 44 ›› Issue (6): 634-640.doi: 10.11947/j.AGCS.2015.20140240

深空探测器同波束相位参考成图相对定位方法

周欢^1,2, 童锋贤^2,3, 李海涛^1,4, 郑为民², 董光亮¹, 李培佳², 舒逢春²

1. 北京跟踪与通信技术研究所, 北京 100094;
2. 中国科学院上海天文台, 上海 200030;
3. 中国科学院大学, 北京 100049;
4. 北京航空航天大学电子信息工程学院, 北京 100091

收稿日期:2014-05-07 修回日期:2014-11-21 出版日期:2015-06-20 发布日期:2015-07-28
作者简介:周欢(1990—),男,硕士,研究方向为深空导航无线电干涉测量技术。E-mail: zhouhuan@bittt.cn
基金资助:
国家自然科学基金(11173052; 10878021); 探月工程重大专项关键技术研究项目(TY3Q20100009); 上海市科委项目(14XD1404300)

Relative Position Determination between Deep-space Probes Based on Same Beam Phase-referencing Imaging Technique

ZHOU Huan^1,2, TONG Fengxian^2,3, LI Haitao^1,4, ZHENG Weimin², DONG Guangliang¹, LI Peijia², SHU Fengchun²

1. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China;
2. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. School of Electrical Engineering, Beihang University, Beijing 100091, China

Received:2014-05-07 Revised:2014-11-21 Online:2015-06-20 Published:2015-07-28
Supported by:
The National Natural Science Foundation of China (Nos.11173052;10878021);The National Key Techniques Research Program of China's Lunar Exploration (No.TY3Q20100009);Project Supported by Science and Technology Commission of Shanghai (No.14XD1404300)

摘要/Abstract

摘要： 针对我国后续深空探测任务中高精度相对定位需求,提出了采用天文同波束相位参考成图技术进行深空探测器相对定位的方法。首先建立适用于深空探测器信号特点的同波束相位参考成图相对定位模型,然后分析信号带宽和UV覆盖两个因素对测量精度的影响。最后利用我国VLBI观测网(CVN)在2013年15、20和21日接收的嫦娥三号着陆器和玉兔号巡视器下行同波束数据,处理得到了巡视器在5个环拍点相对着陆器的位置,验证了本文方法的可行性及其对探测器下行信号的强适应性。与视觉定位结果的对比表明,巡视器相对着陆器定位精度达到米级。

关键词: 相对定位, 深空探测器, 同波束相位参考成图, 嫦娥三号, 中国VLBI观测网

Abstract: To meet the needs of high accuracy relative position determination in deep space explorations, a new method is proposed based on the same beam phase-referencing imaging technique that originates from the radio astronomy. Firstly, the same beam phase-referencing imaging measurement model for spacecraft positioning is built. The very long baseline interferometry (VLBI) imaging principle and the phase difference between two spacecrafts are derived. Then, two precision affecting factors are analyzed, including the signal bandwidth and the UV coverage. The dirty beams formed by different station numbers and different observation lengths with the Chinese interferometry network are simulated. Finally, with the same beam observation data of the Chang'E-3 lander and rover from the Chinese VLBI network (CVN) on December 15, 20 and 21, 2013,the Yutu rover lunar surface positions are determined with accuracy of about 1 meter. The results show the feasibility and high accuracy of this method, which is well-adapted to the spacecraft signals without special beacons.

Key words: relative position determination, deep-space probes, same beam phase-referencing imaging, Chang'E-3, Chinese VLBI network

中图分类号:

P228
V556

周欢, 童锋贤, 李海涛, 郑为民, 董光亮, 李培佳, 舒逢春. 深空探测器同波束相位参考成图相对定位方法[J]. 测绘学报, 2015, 44(6): 634-640.

ZHOU Huan, TONG Fengxian, LI Haitao, ZHENG Weimin, DONG Guangliang, LI Peijia, SHU Fengchun. Relative Position Determination between Deep-space Probes Based on Same Beam Phase-referencing Imaging Technique[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(6): 634-640.

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深空探测器同波束相位参考成图相对定位方法

Relative Position Determination between Deep-space Probes Based on Same Beam Phase-referencing Imaging Technique

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