一种改进的干涉仪-MUSIC联合测向算法  

An improved interferometer-MUSIC joint direction finding algorithm

作　　者：姚志成 许佳诺 杨剑 王海洋 YAO Zhicheng;XU Jianuo;YANG Jian;WANG Haiyang(School of Missile Engineering,Rocket Force University of Engineering,Xi’an 710025,China)

机构地区：[1]火箭军工程大学导弹工程学院,西安710025

出　　处：《兵器装备工程学报》2023年第11期240-247,共8页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金面上项目(62071481);国家自然科学基金青年项目(61501471)。

摘　　要：在无线电测向方法中,干涉仪测向算法和多重信号分类(MUSIC)测向算法较为成熟,广泛应用于众多领域,但各自都有一定的优缺点。文章结合两者优点,提出一种改进的干涉仪-MUSIC联合测向算法,该算法相比于传统的干涉仪测向法和MUSIC测向法具有更高的测向精度和运算速度。首先利用俯仰角切割划分的方法,减少了干涉仪测向法运算量,而后在干涉仪测向法误差分析的基础上,灵活选取MUSIC测向搜索范围,以此将干涉仪测向法和MUSIC测向法结合,提高测向精度和运算速度的同时,增强了算法鲁棒性和适用性。通过仿真分析,证实了所提算法的有效性。文章所提联合测向改进算法为无线电测向研究提供了技术参考。Among the radio direction finding methods,interferometer direction finding algorithm and MUSIC direction finding algorithm are mature and widely used in many fields,but each has its own advantages and disadvantages.Combining the advantages of the two methods,this paper proposes an improved interferometer-MUSIC joint direction finding algorithm,which has higher direction finding accuracy and faster operation speed than the traditional interferometer direction finding method and MUSIC direction finding method.Firstly,the pitch angle cutting method is used to reduce the computation of the interferometer direction finding method.Then,on the basis of error analysis of interferometer direction finding method,the search range of MUSIC direction finding method is flexibly selected,so as to combine interferometer direction finding method with MUSIC direction finding method,improve the direction finding accuracy and operation speed,and enhance the robustness and applicability of the algorithm.Simulation analysis proves the effectiveness of the proposed algorithm.The improved joint direction finding algorithm proposed in this paper provides a technical reference for radio direction finding research.

关 键 词：无线电测向 干涉仪测向法 MUSIC测向法 误差分析 

分 类 号：TN971.1[电子电信—信号与信息处理]