航空兵器2025，Vol.32Issue(5)：121-130,10.DOI:10.12132/ISSN.1673-5048.2025.0098
基于认知频控阵的预警机空-时-频协同反无源定位
Space-Time-Frequency Cooperative Counter Passive Localization for AWACS Based on Cognitive FDA
摘要
Abstract
This study addresses the critical challenge of balancing electromagnetic concealment and detection effi-ciency for Airborne Warning and Control System(AWACS)in modern air combat environments.It systematically in-vestigates a cognitive frequency diverse array(FDA)-based space-time-frequency cooperative counter-passive-localiza-tion technique.By analyzing the technical bottlenecks of existing AWACS radars in complex electromagnetic environ-ments,the inherent limitations of traditional phased-array radars against passive localization systems are revealed,par-ticularly the inadequacies of distributed jammer cooperative deception and specialized waveform signal-feature reduction methods.Innovatively,a multidimensional parameter control framework for FDA is proposed,constructing a signal model encompassing spatial,temporal,and frequency domains to elucidate the generation and propagation mechanisms of passive localization errors.Compared to existing techniques,the core contributions lie in establishing an FDA space-time-frequency cooperative optimization model and developing a Bayesian filtering-based cognitive counter-passive-lo-calization algorithm.This algorithm achieves the novel paradigm of"detection-as-jamming and localization-as-decep-tion"through real-time environmental awareness and dynamic parameter adjustment,effectively countering passive lo-calization systems while maintaining stable tracking of high-speed maneuvering targets.Furthermore,the originality of the phase center perturbation model is reinforced,and a nonlinear frequency offset design overcomes the shortcomings of time-domain truncation methods.Simulation experiments validate the effectiveness of the proposed method,demon-strating significant enhancement of AWACS survivability in complex electromagnetic environments.关键词
认知频控阵/预警机/空-时-频协同/反无源定位/贝叶斯滤波Key words
cognitive frequency diverse array/AWACS/space-time-frequency coordination/counter passive lo-calization/Bayesian filtering分类
军事科技引用本文复制引用
张晶,王博..基于认知频控阵的预警机空-时-频协同反无源定位[J].航空兵器,2025,32(5):121-130,10.基金项目
国家自然科学基金青年基金项目(61503408) （61503408）
