摘要
首先回顾了火星重力场模型的发展历程;然后介绍了火星重力场模型使用中涉及的坐标系统,并给出了各坐标系之间的相互转换关系,再比较了基于不同火星指向参数模型进行坐标转换的差异;最后从重力异常与星历积分两个方面对最新的火星重力场模型GMM-3与JGMRO 120d进行了比较,结果表明两个重力场模型在精度上较为一致,对于10 m量级精度的定轨要求,模型的选取无特殊要求。
In this paper, the development histories of Martian gravity field models are first reviewed, then the related reference coordinate systems of the utilization of gravity model are described, and the mutual transformation relation among the systems is given. Additionally,the coordinate transformation difference based upon two mars orientation parameter model is analyzed. Finally, the latest Mars gravity field model GMM-3 and JGMRO 120 d are compared from two aspects： gravity anomaly and the ephemeris integration. Results show that the two gravity models are consistent in terms of accuracy, and there is no special requirement in the model selection for orbital accuracy of 10 m order.
出处
《天文学进展》
CSCD
北大核心
2017年第1期127-139,共13页
Progress In Astronomy
基金
国家自然科学基金(11303001
61573049
11373013
61304233)
关键词
火星
重力场
坐标转换
Mars
gravity field
Coordinate transformation
