现代防御技术2026，Vol.54Issue(1)：61-72,12.DOI:10.3969/j.issn.1009-086x.2026.01.006
小型均匀圆阵高精度测向方法及系统实现
High Precision Direction Finding Method and System Design for Miniaturized Uniform Circular Array
摘要
Abstract
To address the high algorithm complexity and low timeliness in existing circular array interferometer direction finding methods for building systems,this paper proposed an interferometer direction finding method suitable for system implementation,which was then used in actual systems.First,this method first improved the conventional calculation method for the range of fuzzy numbers based on the amplitude comparison direction finding(ACDF)results,thereby reducing computational complexity and improving processing speed.By considering that higher frequencies enhance ACDF accuracy under the same conditions,the method dynamically segmented the amplitude comparison range in real time by integrating the frequency information and the ACDF results.Then,by taking advantage of the fact that the fuzzy multi-valued differences of each baseline are relatively large,while the true angle has a unique property,the ambiguity resolution for the circular array interferometer direction finding was achieved.Finally,based on the proposed method principle,a miniaturized eight-element uniform circular array interferometer broadband receiver was implemented and designed using an FPGA.Both simulations and field experiments verified that the system achieves high-precision instantaneous direction finding for a radiation source target,with an accuracy of up to 1.5°,demonstrating strong practical value for engineering applications.关键词
均匀圆阵/干涉仪测向/比幅测向/解模糊/小型化Key words
uniform circular array/interferometer direction finding/amplitude comparison direction finding/ambiguity resolution/miniaturized分类
信息技术与安全科学引用本文复制引用
王昊天,晋良念,唐龙,蒙淑娇..小型均匀圆阵高精度测向方法及系统实现[J].现代防御技术,2026,54(1):61-72,12.基金项目
广西创新驱动发展专项(桂科AA21077008) （桂科AA21077008）
广西自然科学基金项目(2023GXNSFAA026060) （2023GXNSFAA026060）
广西八桂学者专项经费资助(2019A51) （2019A51）
