基于唯相位变化率无源定位的三维可观测性分析

Observability analysis requirements for three-dimensional via phase rate of change only passive localization

利用机动辐射源信号到达运动单站的相位变化率(PRC)对该辐射源进行无源定位。应用相位变化率对目标定位的方法,因其非常高的精确度而被广泛应用于卫星无源定位和机载无源定位。而可观测性分析是定位算法是否可以正确定位的前提。三维时的可观测性分析较二维更具有实际意义,但未被明确的推导。研究了三维时的定位算法及可观测性分析结论,并用Matlab仿真验证了结论的正确性。

A motion electronic emitter can be located by only one observation station from PRC （phase rate of change） measurement, This method is used widely because of its high precision. And if the target can be located correctly is based on the observability analysis. The observability analysis for three- dimensional is more important than it for two-dimensional,but has not been determined definitely. A locating algorithm and conclusion of observability analysis for three-dimensional are discussed, The reliability of conclusion is proved by the emulation of Matlab.