基于通信时分框架的单站无源动目标定位技术

Technique of Single Station Passive Location to Mobile Objects Based on Time-division Communication Structure

基于几何三角结构的无源定位技术是通过对三角形三元关系的推测,实现对未知方空间位置的确定。针对单站对动目标的无源定位,提出一种新的技术思路,通过对通信信号时分结构周期性地分析研究,利用径向时间周期的时差变化实现对目标径向位移的精确测量,再结合单站测角方法可以较好地实现单站对动目标的无源定位。仿真结果表明,该算法对各种运动规律的动目标定位具有稳健性和有效性。

Technology of Passive Location based on geometric triangular structure can locate the unknown signal.A new idea is proposed aiming at Moving Target location.By discussing the regular pattern of the target’s electromagnetic behavior,especially by analysis of communication signal’s time-division structure and cycle,the and time-periodic time delay variation is used to measure the radial shift accurately.Combined with DOA and continuous time series estimation,a single station can locate the target.Simulation results show that this method is very robust and effective for targets with various motion patterns.