参考系选择对Kepler广播星历参数拟合精度的影响

Impact of Coordinate Transformation on the Fitting Accuracy of Kepler Broadcast Ephemeris

通过对MEO、IGSO、GEO三类导航卫星广播星历的开普勒轨道根数拟合方法及其拟合精度的分析研究，得出结论：开普勒轨道根数拟合导航卫星广播星历的方法，能很好吸收坐标变换过程中岁差、章动、极移、地球自转等因素对卫星星历拟合精度的影响。

Kepler orbit elements fitting method and its attained accuracy are analyzed for MEO, IGSO and GEO navigation satellites. As demonstrated by various examples of satellite ephemeris fitting, the paper arrives at the following conclusion. the Kepler orbit elements fitting method fits well into absorbing the affection by precession, nutation, earth pole motion and earth rotation in the course of coordinate transformation.