Comparison analyses on the 150 × 150 lunar gravity field models by gravity/topography admittance,correlation and precision orbit determination |
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| Authors: | Jianguo Yan Zhen Zhong Fei Li James M Dohm Jinsong Ping Jianfeng Cao Xie Li |
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| Institution: | 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430070, China;2. Space Research Institute, Austrian Academy of Science, Graz 8042, Austria;3. School of Physics and Electronic Science, Guizhou Normal University, Guiyang, 550001, China;4. Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ 85721, USA;5. National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China;6. Space Flight Dynamics Laboratory, Beijing Aerospace Command and Control Center, Beijing 100094, China |
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| Abstract: | We analyzed the 150 × 150 lunar gravity field models, LP150Q, GLGM-3 and SGM150, using the power spectrum on the lunar nearside and farside, the lunar global and localized gravity/topography admittance and correlation, and Chang’E-2 precision orbit determination to investigate which model is a more effective tool to estimate geophysical parameters and determine the lunar satellite precision orbit. Results indicate that all gravity field models can be used to estimate the lunar geophysical parameters of the nearside of the Moon. However, SGM150 is better in such computation of the farside. Additionally, SGM150 is shown to be the most useful model for determining the lunar satellite orbit. |
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| Keywords: | Lunar gravity field models Admittance spectrum Correlation spectrum Chang&rsquo E-2 Precision orbit determination |
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