基于逐基线收敛的任意平面阵干涉仪测向方法  

Direction Finding Method of Arbitrary Planar Array Interferometer Based on Baseline-by-Baseline Convergence

作　　者：左峰 卢毅 罗美方 ZUO Feng;LU Yi;LUO Meifang(Leihua Electronic Technology Institute,AVIC,Wuxi 214082,China)

机构地区：[1]中国航空工业集团公司雷华电子技术研究所,江苏无锡214082

出　　处：《现代防御技术》2024年第6期72-79,共8页Modern Defence Technology

基　　金：江苏省卓越博士后计划(JB0203001)。

摘　　要：为满足任意平面阵的快速二维测向需求,提出了一种逐基线收敛的干涉仪测向方法。建立了任意平面阵的几何模型与信号模型,在无相位模糊条件下推导出了二维来波方向解算公式。基于真实角度下基线模板相位差与测得相位差的相关性,提出了一种逐基线收敛的解模糊方法。通过一组八元任意平面阵干涉仪实例验证了该算法的有效性。实验结果表明,依据各基线模板相位差与测得相位差的相关性逐次对潜在二维来波方向组合进行收敛,能够有效地提升干涉仪二维测向效率。This paper proposes a method based on baseline-by-baseline convergence to meet the requirements of fast two-dimensional direction-finding of an arbitrary planar array.Firstly,this paper establishes the geometrical and signal models and derives the two-dimensional direction of the arrival formula under the no-phase ambiguity condition.Then,a baseline-by-baseline convergent method is proposed to resolve ambiguity based on the correlation between the baseline template and measured phase difference.Finally,an eight-element arbitrary planar array interferometer verifies the algorithm's effectiveness.The experimental results show that this advanced method can effectively improve the interferometer's two-dimensional direction-finding efficiency by converging the potential angle combination according to the correlation between the phase difference of each baseline template and the measured phase difference.

关 键 词：干涉仪 测向方法 任意平面阵 相位解模糊 相关干涉仪测向 

分 类 号：TN971[电子电信—信号与信息处理] TJ0[电子电信—信息与通信工程]