Highlights Influence of CE-2 orbit data on the global lunar topographic map is analyzed. Key technologies and processes of global adjustment using CE-2 images are studied. CE-2 orbit data can be optimized obviously after global adjustment. High precision absolute positional global lunar topographic map can be generated.

    Abstract 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.


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    Title :

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


    Contributors:
    Yan, Wei (author) / Liu, Jianjun (author) / Ren, Xin (author) / Wang, Fenfei (author) / Wang, Wenrui (author) / Li, Chunlai (author)

    Published in:

    Advances in Space Research ; 56 , 11 ; 2389-2401


    Publication date :

    2015-09-06


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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