摘要
卫星精密定轨中,需要计算天球坐标系(CRF)到地球固联坐标系(TRF)之间的转换。由于天球坐标系到地球固联坐标系转换涉及岁差和章动,如何选择精度更高、误差更小的岁差章动计算模型是首要解决的问题。文章介绍了IAU1976岁差模型、IAU1980章动模型以及IAU2000A岁差章动模型,并对不同的岁差章动模型进行建模仿真。通过对比得出,IAU2000A岁差章动模型较IAU1976岁差模型、IAU1980章动模型可以给出更高的定轨精度。
For precise satellite orbit determination, the transformation should be done between the Celestial Reference Frame （CRF） arid the Terrestrial Reference Frame （TRF）. Precession and nutation should be considered during coordinate transformation from the CRF to the TRF. IAU1976 precession model, IAU1980 nutation model and IAU2000A precession-nutation model were presented, the differences were compared with IAU2000A precession-nutation model. The results indicate that IAU2000A model is more precise.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2009年第5期42-47,53,共7页
Chinese Space Science and Technology
关键词
岁差
章动
坐标变换
地球质心力学时
太阳质心力学时
Precession, Nutation, Coordinate transformation ,Terrestrial dynamic time ,Barycentric dynamic time
