摘要
针对以往和新近高阶月球重力场模型,利用多种方式分析和比较了不同重力场模型的功率谱和自由空气重力异常,仿真计算了不同高度、不同倾角、不同重力场模型对探月卫星轨道演化的影响。所有重力场模型对近极轨卫星轨道的影响相同,均适用于近极轨卫星的精密定轨。CEGM02、SGM100h、SGM150较适用于非极轨绕月卫星的精密定轨。未来探月活动可以考虑发射非极轨卫星,进一步完善月球重力场模型。在月球重力场全球模型的基础上,使用局部球谐函数方法,可以对局部重力场进行补充,以完善全球重力场模型。
The power spectrum and the free air els CEGM02, SGM100h, SGM150, LP150Q, gravity anomaly of different gravity field mod- GLGM-3, LPE200 were analyzed. The orbits of the lunar exploration spacecrafts with different altitudes and inclinations were simulated for all the gravity fields. Results firstly show that all the models behave the same way for polar orbit satellites, which reveal that all the models can be recommended in precision orbit determination for the polar orbit satellites. But CEGM02, SGM100h and SGM150 contribute more to those non-polar orbit spacecrafts. It is accordingly suggested that those non-polar orbit spacecrafts could be launched for future lunar exploration so as to perfect the lunar gravity field model. Moreover, the lunar gravity field model will be refined by using localized spherical harmonic functions which can efficiently extract local gravity field signals.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第4期390-393,375,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40974014
41174019
40904006)
武汉大学中央高校基本科研业务费专项资金资助项目(122009)
湖北省自然科学基金重点创新群体项目(2012FFA041)
关键词
月球重力场模型
自由空气重力异常
功率谱
精密定轨
lunar gravity field model
free air gravity anomaly
power spectrum
precisionorbit determination
