Abstract:This paper is concerned with the problem of suboptimal and divergence in distributed filtering for autonomous orbit determination of satellite navigation systems. This paper proposes a concentrated filtering method, in which the navigation satellite constellation is considered as a whole, and essentially, theories of pseudo-inverse adjustment and spacecraft dynamic orbit determination are combined. First of all, differences between free network adjustment of geodetic survey and that of spacecraft network are discussed.Then a method of satellite constellation orbit determination which combines pseudo-inverse adjustment theory and satellite orbit dynamics is constructed, and the relevant technological process is given primarily. Finally, an example of network of typical walker constellations is given. The simulation results show that the user range error (URE) of any satellite is less than 0.8 m, mean URE of the satellite network is less than 0.5 m after five days’ autonomy operation.This verifies the efficiency of the method.
XIEYoufang,WANG Ling,Huang Dewen. A Method Based on Pseudo-Inverse Adjustments of Navigation Satellite Constellation Orbit Determination[J]. jgg, 2016, 36(6): 544-.