Development of technique of the relative navigation based on Kalman filter

This paper discusses mainly the technique of parameter hybrid of Kalman filter applied in the system of relative navigation.It focuses on the evolution of relative position error of two airplanes.At first,we have studied the evolution of the absolute navigation position error.Then we have discussed the hybrid of Kalman filter of the INS and GPS.We also have discussed the parameter hybrid of relative navigation and obtained the result of hybrid under the two different conditions as following:(1)the navigation data after hybrid is transmitted between airplanes.(2)the hybrid of the navigation data after transmitting each other.Finally we have obtained the evolution of the estimate error of relative position of navigation system under the different modes with the MATLAB simulation.