关键词: 无源定位, 频差定位, 直接求解法, GDOP分析

Abstract: Based on the FDOA (frequency difference of arrival) location of the radiative source using moving observations,an FDOA location algorithm which solves the location of the target directly is proposed,which overcomes the difficulty in solving FDOA location algorithm.The proposed algorithm utilizes the polar coordinates to express the target coordinate relative to reference station,the algorithm uses the form of the FDOA location equation with skill,firstly,calculates the azimuth of the target,and then solves the radial range between the target and reference station,finally the equation with which the accurate location of the target can be determined directly is obtained.In this paper,an elaborate analysis of the algorithm is given,the ambiguity of azimuth and radial range as well as the solving method are discussed,simultaneously,simulation analysis shows that the theoretical analysis is correct,which provides the application of FDOA location algorithm with theoretical basis.

Key words: passive location, FDOA location, direct solution, GDOP analysis