信号处理2025，Vol.41Issue(6)：1086-1096,11.DOI:10.12466/xhcl.2025.06.007
基于最速方法的宽零陷干扰抑制自适应波束形成方法研究
Wide-Null Interference Suppression in Adaptive Beamforming Based on a Novel Fastest Iterative Method
摘要
Abstract
Applications such as radar,sonar,and wireless communication have increased the requirements for the anti-interference ability and real-time performance of adaptive beamforming.The conventional adaptive beamforming algo-rithm based on the fastest iteration exhibits a sharp decline in interference suppression performance under low snapshot and coherent interference conditions and cannot effectively capture the signal characteristics to effectively suppress inter-ference.Moreover,under interference disturbance and steering vector mismatch conditions,it cannot effectively sup-press the interference.To address these issues,this study proposes a wide-null interference suppression adaptive beam-forming method based on the steepest descent approach.The method first uses a spatial smoothing-based weight pre-processing mechanism to decorrelate signals,extract signal features,and construct a projection matrix to obtain initial weights.Then,it suppresses interference using the steepest descent algorithm to form the beam.Finally,a null broaden-ing and deepening method,based on covariance matrix reconstruction,is used to further enhance the interference sup-pression capability and improve the algorithm's robustness.Simulation results verified that the proposed algorithm effec-tively suppressed interference under wideband coherent interference conditions and demonstrated good robustness.关键词
宽带相干信号/自适应波束形成/零陷展宽Key words
broadband coherent signal/adaptive beamforming/null broadening分类
信息技术与安全科学引用本文复制引用
高志奇,张恩赏,黄平平..基于最速方法的宽零陷干扰抑制自适应波束形成方法研究[J].信号处理,2025,41(6):1086-1096,11.基金项目
国家自然科学基金(61761037) （61761037）
内蒙古自治区自然科学基金项目(2021MS06005) （2021MS06005）
内蒙古自治区直属高校基本科研业务费项目(JY20220147) The National Natural Science Foundation of China(61761037) （JY20220147）
The Natural Science Foundation of Inner Mongolia(2021MS06005) （2021MS06005）
Basic Scientific Research Business Cost Project of Colleges directly under the Inner Mongolia(JY20220147) （JY20220147）
