LEO SATELLITE EPHEMERIS PARAMETERS FITTING METHOD BASED ON ORBIT CHARACTER OF SATELLITE
基于卫星轨道特征的低轨卫星星历参数拟合法

On the basis of the orbit character of the LEO satellite and the advantages of definite physical meanings, quickly creating, high precision, fewer parameters of GPS broadcast ephemeris, a new sort of ephemeris parameters for calculating LEO satellite location is designed and analyzed through a example. Some significant comparisons are made between the 15-parameter method of GPS broadcast ephemeris and the designed 25-parameter method, the results show that the designed 25 parameters method has a higher precision for LEO satellite orbit fitting under the same condition.