基于典范相关分析的时差测向技术研究

Time difference direction finding based on canonical correlation analysis

测向是电子战系统的一个重要组成部分,测向精度直接对信号分选、识别、定位、干扰决策等都产生较大的影响。时差测向的准确度和灵敏度都相对较高,在无源测向中具有广阔的应用前景。针对时差测向抗干扰性能差和噪声影响的问题,本文提出采用典范相关分析方法改进其性能,并对这种新的测向算法进行了完整的分析。通过仿真实验,可以看到本文提出的基于典范相关分析的时差测向方法能够取得比常规时差测向更稳定、准确的结果,而且实现简单,实时性好,能充分满足电子战系统实时性的要求。

Direction Finding is an important component of Electronic Warfare （EW） system. The direction finding precision may directly affect signal sorting, identification, location and jamming decision etc. It is an urgent task to improve the direction finding precision. To solve the problems of time difference direction finding which sensitive to interference, this paper proposes a novel way mainly based on Canonical Correlation Analysis （CCA） to improve time difference direction finding performance and completely analyzes the algorithm. The implementation of this time difference direction finding method is therefore simple and effective. The direction finding precision by the novel method is much better than what by conventional way. The experiments in this paper show that applying CCA to time difference direction finding is efficient and feasible.