Orbit optimization of Chang'E-2 by global adjustment using images of the moon

被引：5

作者：

Yan, Wei ^{[1
]}

Liu, Jianjun ^{[1
]}

Ren, Xin ^{[1
]}

Wang, Fenfei ^{[1
]}

Wang, Wenrui ^{[1
]}

Li, Chunlai ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Lunar & Deep Space Explorat, Natl Astron Observ, Beijing 100012, Peoples R China

来源：

ADVANCES IN SPACE RESEARCH | 2015年 / 56卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Chang'E-2; CCD stereo camera; Global lunar topographic map; Global adjustment; Orbit optimization;

D O I：

10.1016/j.asr.2015.09.006

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The orbit accuracy of the Chang'E-2 (CE-2) lunar probe is one of the most critical factors for a seamless mosaic of the global lunar topographic map. During the production of the CE-2 global lunar topographic map, a maximum deviation of kilometers magnitude existed in the horizontal direction of homologous points between neighboring images, while the maximum height deviation of these points is up to several hundred meters. This phenomenon indicates that current orbit determination results of CE-2 cannot truly reflect the relative position relationship between probe and lunar surface features. Against this background, global adjustment using images of the moon should be carried out to solve this problem. In this paper, the influence of CE-2 current orbit accuracy on the production of a global lunar topographic map will be analyzed based on the introduction of CE-2 observation data, including images and orbit data. Additionally, key technologies and technical processes of global adjustment using CE-2 images with high-resolution and large amounts of data will be researched. Finally, orbit optimization of CE-2 after global adjustment is analyzed, as well as the accuracy of the CE-2 global lunar topographic map for validation verification. (C) 2015 Published by Elsevier Ltd. on behalf of COSPAR.

引用

页码：2389 / 2401

页数：13

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