航空科学技术2025，Vol.36Issue(10)：24-29,6.DOI:10.19452/j.issn1007-5453.2025.10.003
基于多参考频点的二维宽带DOA估计算法
Two-Dimensional Wideband DOA Estimation Algorithm Based on Multi-Reference Frequencies
摘要
Abstract
Wideband direction of arrival(DOA)estimation is a fundamental technique for modern airborne radar systems to achieve precise target localization and tracking.Researching high-precision wideband DOA estimation algorithms has significant engineering application value.However,conventional wideband DOA estimation algorithms lose much information when decomposing wideband signals into a single reference frequency,and their results in estimation accuracy struggle to meet the high-precision positioning requirements.Considering this,this paper proposes a novel algorithm based on multiple reference frequencies,effectively utilizing the direction-of-arrival information contained in different frequency components and significantly improving the accuracy of wideband DOA estimation.Furthermore,to ensure applicability across more complex and advanced array structures,this paper extends the algorithm to two-dimensional uniform rectangular arrays.Simulation results demonstrate that our proposed algorithm effectively estimates the DOA of incident signals and significantly outperforms other wideband DOA estimation algorithms across different signal-to-noise ratios.It provides crucial technical support for improving the detection accuracy of airborne radar systems.关键词
DOA估计/阵列信号处理/宽带DOA估计/时频域信号处理/均匀面阵Key words
DOA estimation/array signal processing/wideband DOA estimation/time-frequency signal processing/uniform rectangular array分类
电子信息工程引用本文复制引用
徐前,孔金山,梁宝强,高玉龙..基于多参考频点的二维宽带DOA估计算法[J].航空科学技术,2025,36(10):24-29,6.基金项目
航空科学基金(2023Z037077001) （2023Z037077001）
国家自然科学基金(62171163) Aeronautical Science Foundation of China(2023Z037077001) （62171163）
National Natural Science Foundation of China(62171163) （62171163）
