METHOD OF GRAVITY FIELD INVERSION WITH COMBINING GRACE ORBITS AND RANGE-RATE OBSERVATIONS
联合GRACE卫星轨道及距离变率数据反演地球重力场方法研究

The dynamical method based on the precision orbits and range-rate data of GRACE for recovering gravity field model is discussed,and the gravitational potential coefficients and the satellite's initial state error can be estimated simultaneously with this algorithm.The gravity field models are recovered with the combined observations with different orbits accuracy and different sampling rate range-rate of GRACE,finally the accuracy of gravity field model recovery are analyzed.The simulated results show that ...