基于"嫦娥一号"跟踪数据的月球重力场模型CEGM-01
摘要
The characteristic of Chang`E-1 orbital tracking data is presented in this paper, and the principle and solution strategy of lunar gravity field recovery based on dynamical precise orbit determination are summarized. Under the condition of limited accuracy and coverage of tracking data of Chang`E-1, a lunar gravity field model CEGM-01 up to degree and order 50 is solved independently using six months tracking data. The accuracy of the model CEGM-01 is assessed by multi-means, such as gravity power spectrum, observational residuals after precision orbit determination, lunar surface gravity anomaly character, admittance/coherence with topography model, and the corresponding physical feature and effect are analyzed. The results indicate the effectiveness and reasonability of CEGM-01 solution process. On the basis of current work the prospect of future development of our national lunar gravity field detection is presented.