地球卫星运动中坐标系附加摄动与参考系选择问题

针对地球赤道面的摆动,曾提出过两种空间地心赤道坐标系,即历元地心平赤道坐标系和混合形式的轨道坐标系.在后一种坐标系中虽然可避免计算因地球引力位变化所引起的坐标系附加摄动的麻烦,但这又带来了两种坐标系之间的不统一和转换的麻烦.针对实际现状,直接在历元地心平赤道坐标系中给出相应的坐标系附加摄动解,所有与此有关的转换问题,均可在历元地心平赤道坐标系中进行,而无需为了避免坐标系附加摄动的计算去通过轨道坐标系来实现.从而建议,不必再引进轨道坐标系,在卫星定轨和预报中,所有的转换问题均可采用同一坐标系,即历元(目前是J2000.0)地心平赤道坐标系. 

On the Additional Perturbation Due to the Change of Coordinate System of Earth Satellites and the Choice of Reference Systems

Early in the 1960s, there had been two geocentric equatorial coordinate systems to deal with the vibration of earth's equator, namely the Geocentric Equatorial Inertial Coordinate Systems (Mean Equator Mean Equinox, MEME) and the Geocentric True Equator Mean Equinox Coordinate Systems (TEME, also referred to as the Orbital Coordinate System). The adoption of the latter definition could avoid the trouble caused by the additional perturbation due to the change of coordinate system, while bring in disagreement and extra coordinate transformation with the MEME. This paper provides a solution to eliminate redundant transformation by giving analytical perturbation formulae directly in the MEME. In that case, the TEME is no longer necessary in orbit determination and forecast for all related work could be done in a uniform MEME coordinate system (now it's of Epoch J2000.0).