ACCURACY ANALYSIS OF J_2 INVERTED FROM ORBIT SERIES OF LOW EARTH ORBIT SATELLITES
低轨卫星轨道序列反演J2项的精度分析

In order to satisfy the accuracy requirements of the earth dynamical form factor(J2) needed in satellite orbit determination,weapon launch and the calculation of astronomic constants,the value of J2 was estimated from the secular trends of the orbits series of three gravity satellites.The factors such as orbit height,sampling interval and the disturbing forces were studied.The results show that the higher orbit produces the better calculation accuracy.Besides,that all disturbing forces on GOCE orbit conside...