一种基于阵列信号处理的短波侦察系统的设计及实现

Design and Implementation of the High-frequency Reconnoitering System Based on Array Signal Processing

本文研究并实现了一个集宽带搜索、宽带测向、跳频搜索、窄带测向、窄带分析等功能于一体的短波阵列信号侦察系统.该系统采用阵列天线和短波射频信号低通采样的软件无线电结构,结合先进的空间谱估计、波束形成、零点对准等阵列信号处理技术,使新的短波侦察接收机与传统接收机相比,大大改善了整体性能.现场试验表明,本文设计的阵列信号处理系统性能优良、信号处理算法有效.

This paper presents a design and of the high-frequency reconnoitering system bringing together broadband signal searching, broadband signal direction finding, frequency-hopping signal searching, narrowband signal direction finding, and narrowband signal analysis. The system adopts array antennas and software-radio structure that samples hlgh-frequency signal in the low-pass form, and especially utilizes some advanced array signal processing technology such as spatial spectrum estimation, adaptive beam-formlng and nulling. The field test shows that the presented system outperforms traditional hlgh-frequency reconnoitering receiver, and the adopted algorithms of the array signal processing are effective.