基于盲信号分离的同频多信号测向技术

介绍了一种基于快速定点的盲分离算法,该算法可以对来自不同方向上的统计独立信号进行有效的分离,并且不需要预先知道信号的方向和阵列的结构流形。常规的干涉仪算法只能够对非同频信号测向,当多个信号频谱重叠时,无法准确获得单个信号的相位,因此采用干涉仪算法不能够实现对同频多信号测向。提出了一种基于盲信号分离结果的干涉仪测向算法,可以解决同频多信号的测向,进一步提高了干涉仪算法的应用前景。

Study on Co-Frequency Multi-Signal Direction Finding Technique Based on Blind Signal Separation (BSS)

This paper introduces a fast fixed-point blind signal separation algorithm,which can separate the statistical independent signals coming from different direction without knowing the direction of signals and the structure of antennas array. The usual interferometer can only implement the direction finding for non-co-frequency signals. When the spectrums of multiple signals overlap, the usual interferometer can not obtain accurately the instantaneous phase of each signal. The paper presents a new interferometer direction finding algorithm,which can realize the direction finding for same frequency signals,and avoid the error of measuring phase in low SNR.