Autonomous navigation of non-cooperative target based on multiple line-of-sight

For the autonomous relative navigation of the distant non-cooperation target in high orbit, this paper proposed a relative navigation method based on the multiple line-of-sights. This method establishes the dynamic model of the satellite under the inertial system. Compared with the method of modeling with the relative kinetic, the method in this paper avoids the need to obtain the parameters of the chief satellite orbit in real time which is very difficult for high orbit satellite. Although the absolute navigation results obtained by this method may diverge, the relative navigation results converge well. The coordinate transformation method is used to reduce the non-linear effect of observation equations and improves the navigation accuracy. Simulation results indicate that this method is stable and effective.