空天预警研究学报2026，Vol.40Issue(4)：269-275,7.DOI:10.3969/j.issn.2097-180X.2026.04.007
基于混合解耦与级联抗干扰的FDA测向欺骗方法
FDA direction-finding deception method based on hybrid decoupling and cascaded anti-interference
摘要
Abstract
Aiming at the problems of beamforming ambiguity and insufficient robustness of interference sup-pression in complex environments caused by the inherent range-angle coupling in frequency diverse arrays(FDA),this paper proposes an FDA direction-finding deception method based on hybrid decoupling and cascaded anti-interference.First,range-angle decoupling is achieved by blending the nonlinear frequency control function with a bisected cross-subarray structure.Then,a cascaded anti-interference algorithm is designed combining two-side constrained minimum variance distortion-free response(TS-MVDR)and robust Capon beamforming(RCB),and a radial basis function neural network(RBFNN)is employed to correct the covariance matrix so as to enhance the robustness under low snapshots and steering vector mismatch.Finally,a deception model of the non-linear FDA against interferometer direction-finding systems is established.Simulation results demonstrate that the proposed method reduces the coupling coefficient to less than 0.005 and enables the main-lobe energy focusing ef-ficiency to be 40%higher than that of a single carrier frequency cross-subarray,that the output signal-to-interfer-ence-plus-noise ratio(SINR)reaches 18 dB,and that the interference suppression depth reaches-42 dB.关键词
频控阵/测向欺骗/混合解耦/级联抗干扰Key words
frequency diverse array(FDA)/direction-finding deception/hybrid decoupling/cascaded anti-in-terference分类
信息技术与安全科学引用本文复制引用
张晶,王博..基于混合解耦与级联抗干扰的FDA测向欺骗方法[J].空天预警研究学报,2026,40(4):269-275,7.基金项目
国家自然科学基金青年项目(72501298) （72501298）
