基于数字多波束比幅的干涉仪测向方法  

Interferometer direction finding method based on digital multi beam amplitude comparison

作　　者：侯官茂 HOU Guanmao(Southwest Institute of electronic equipment,Chengdu 610036,China)

机构地区：[1]西南电子设备研究所,成都610036

出　　处：《空间电子技术》2024年第6期104-109,共6页Space Electronic Technology

基　　金：国家自然科学基金项目(编号:U20B2043)。

摘　　要：文章介绍了一种基于数字多波束比幅的干涉仪测向方法。基于最长基线实测相位差推算出所有入射角模糊解,利用各基线相位差在入射角模糊解方位上形成数字波束,并进一步通过对波束的比幅实现解模糊获得测向结果。文章还创新性的提出了解模糊可靠裕度概念,通过仿真分析研究了此测向方法的可行性、解模糊可靠裕度与解模糊性能的关系,以及与几种传统测向方法的性能对比。仿真结果表明,该方法具有可行性,解模糊可靠裕度与解模糊概率之间为正相关关系。该方法表现出了良好的测向效果,且解模糊概率优于传统测向方法。This article proposes a direction finding method based on digital multibeam amplitude comparison.Based on the measured phase difference of the longest baseline,all the fuzzy solutions of the incident angle are calculated,and the digital beams are formed on the azimuth of the fuzzy solutions of the incident angle by using the phase difference of each baseline,furthermore,the direction finding results are obtained by resolving the ambiguity of beam amplitude comparison,and the concept of fuzzy reliability margin is proposed innovatively.The feasibility of the direction finding method,the relationship between the reliability margin and the performance of the method,and the comparison with several traditional methods are studied by simulation.The simulation results show that the method is feasible,the relationship between the reliability margin and the probability is positive,the method shows good direction finding effect,and the probability is better than the traditional direction finding method.

关 键 词：干涉仪 数字多波束比幅 测向 解模糊可靠裕度 

分 类 号：TH744.3[机械工程—光学工程] V443[机械工程—仪器科学与技术]