Navigation System Research Based On Radio Origin Of Celesital Body

This paper mainly solves the problem of autonomous navigation on deep space exploration satellite,which allows the satellite not only independent on ground equipment but also on existence.This paper mainly depends on the signal to celestial navigation algorithm,and its feasibility is verified by simulation.This paper firstly focus on 21 cm spectrum measurement technology and navigation technology,put forward a related electrical signal measurement technology based on digital beam synthesis by making simulation.At the same time,by analysis of the celestial radio frequency signal,and prove its feasibility as a navigation signal source.In terms of the 21 cm line navigation principle,doppler shift theory establishment autonomous navigation algorithm model based on the Einstein space-time,which can track the dynamics equation of state for the establishment of model.And then,by doppler frequency offset measurement to establish the measurement equation from the view of measurement.At last,by established doppler velocity navigation filter to verify this navigation method using simulation.The rationality of autonomous navigation based on 21 cm spectrum for single speed navigation,spacecraft position information points obtained is not enough,this paper introduces a method of X-ray pulsar to overcome the shortcomings of autonomous navigation.By analysis of the X ray pulsar signal to establish the pulsar signal model and to establish the autonomous navigation algorithm model based on position increment method using numerical simulation.Finally,this paper designed an integrated navigation algorithm of this two navigation method based on the federated filter,considering of the Earth-Mars transfer orbit.By means of STK software to design a Kalman filter algorithm of nonlinear system,which can estimate the performance of each subsystem and the global ability about federal filter.