地球引力摄动
- 网络terrestrial gravitational perturbation
地球引力摄动-
要提高预报轨道拟合的精度，关键是要对摄动力简化特别是地球引力摄动高阶项的截断以及日月引力场简化造成的轨道预报精度损失加以控制。
M. Therefore controlling the precision loss of orbital prediction cased by the simplification of models of perturbation force , especially by the truncation of high order terms of Earth gravitational perturbation and simplification of models of Sun and lunar gravitational fields can improve the fitting precision of prediction orbit .