Satellite-ground Integrated DOA TDOA Location Algorithm Based on EKF
Aiming at the integrated requirement of passive location,a satellite-ground integrated location method using direction of arrival(DOA)and time difference of arrival(TDOA)is proposed.Locating principle is studied,locating mathematical model is established,the solving method and the expression of location accuracy are given,and the extended Kalman Filter(EKF)algorithm based on DOA and TDOA parameter is derived,respectively.The simulation results show that this method can get higher location accuracy;In addition,this locating model only needs single satellite,and the problem of finding matching adjacent-satellite in traditional spaceborne platform location is avoided.With the cooperation of mobile platform,it can get fast and efficient location result of the radiation source.This method has certain engineering application value.
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