Research on rapid attitude tracking for space non-cooperative target

A rapid attitude tracking-based navigation strategy for non-cooperative target tracking is proposed in this paper. In order to cope with the output interruptions of the laser range finder, the relative position-velocity based filter with variance correction is used for approximate tracking; when the laser range finder works properly, the navigation filter based on full-dimensional state observer is adopted by introducing the pole-assignment method and indirect measurement matrix, and the convergence rate can be regulated by using different pole-assignments. Series of simulations are performed with different initial conditions to demonstrate the filter behaviors. The result shows that the navigation strategy proposed in this paper can be used to cope with the interruptions of the laser range finder effectively, and compared with the traditional Extend-Kalman filter, the computational complexity due to matrix derivations can be avoided, and the convergence rate of the navigation filter is improved consequently.