Abstract:Space laser communication link based on space mobile platform is the main method for achieving large capacity space communications, but high precision dynamic tracking of space mobile platform is always one of the difficult problems to be resolved. It is impossible to accurately describe the movement of airborne platform with the simple model, so it is necessary to adopt interacting multiple models (IMM), while traditional IMM need to know the priori knowledge and complex calculation, so in this paper, fuzzy IMM based on fuzzy logic inference can be used to replace model probability and decrease calculation complexity. Standard particle filter (PF) can deal with nonlinear/non-Gaussian problems, but it can cause the degeneracy phenomenon and sample impoverishment. Improved PF-unscented particle filter(UPF) can combine with current observations, which moves sample particles to the maximal posterior density estimation of the target state. Simulation results demonstrate the improved performance of the proposed method.
