wuhan university deep-space orbit determination and gravity recovery system(wudogs) and its application analysis

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ID: 147592
2017
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Abstract
WUDOGS(Wuhan University deep-space orbit determination and gravity recovery system) is a software system designed for deep spacecraft precise orbit determination and planetary gravity recovery, developed independently at Wuhan University. WUDOGS now has the function for Lunar and Mars spacecraft precision orbit determination. Its design pattern and main function are briefly introduced. The cross verification test(CVT) between WUDOGS and state of the art planetary precise orbit determination software GEODYN-Ⅱ are elaborated. The results show that:①for orbit propagation, with all the same forces and other configuration, the predicted orbit difference in R,T,N directions are less than 0.3 mm for one month arc, 5×10-3 mm for 2 days arc, compared with GEODYN-Ⅱ;②the difference RMS of computed values of observables for two-way range and two-way range rate is at levels of 0.06 mm and 0.002 mm/s respectively;③for Chinese Chang'E-1 POD, the reconstructed orbit difference between WUDOGS and GEODYN-Ⅱ is at 2 cm level, for ESA MEX POD, the reconstructed orbit difference between WUDOGS and ESA is at 25 m level. Current developing situation of WUDOGS and comparison with international research level show that WUDOGS has a good application prospect, which will be important for meeting the demand of Chinese future planetary exploration and the development of deep space spacecraft POD software.
Reference Key
mao2017actawuhan Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;YE Mao;LI Fei;YAN Jianguo;HAO Weifeng;YANG Xuan;JIN Weitong;QU Chunkai
Journal Phytochemistry
Year 2017
DOI
10.11947/j.AGCS.2017.20160525
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