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Analysis Distribution and Feature of Lunar Gravity Field Using SGM90d Model  

Huang, He (성균관대학교 건설환경연구소)
Yun, Hong-Sic (성균관대학교 사회환경시스템공학과)
Lee, Dong-Ha (성균관대학교 건설환경시스템공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.27, no.2, 2009 , pp. 129-138 More about this Journal
Abstract
The lunar gravity field is an important source to understand the lunar interior structure, dichotomy and magma ocean of the moon, furthermore it can be used to study the origin and evolution history of the moon. In this paper, we firstly investigated the history of lunar exploration were performed for determining the lunar gravity field, in addition to investigating the procedure of progress related with the lunar gravity field model and gravity observations techniques. After, we determined practically the gravity anomalies of the moon using the new lunar gravity model, SGM90d (SELENE Gravity Model), which were developed by processing the tracking data from SELENE, the japanese lunar mission. Finally, we compared the lunar gravity anomalies from SGM90d model to the those from existing lunar gravity model (LP165P). As results from the comparison, we can make a sense that 4-way Doppler observations of SELENE is very effective to measure the gravity field on the farside of the moon. The precise lunar gravity field model including the farside of the moon which can be more helpful to understand the dichotomy of moon and to establish the detailed distribution of lunar gravity field, such as a mascon.
Keywords
Lunar exploration satellite; Lunar gravity field; Farside; SELENE; SGM90d;
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