有源干扰对末端制导雷达干扰理论建模与分析

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中图分类号：E917 文献标志码：A DOI：10.3969/j. issn.1673-3819.2025.05.017

Abstract：Toinvestigate theefectiveness ofactivejamming against terminal guidanceradar，this paperconducts theoretical modelingandanalysisofthejammingcapabilies.Firstly，basedontheLinearFrequencyModulation（LFM）signaland Pulse-Dopplerprocessingmechanism，modelsfortheradar’stransmitedsignalandthereceivedtargetechosignalrestablished.Secondly，mathematicalmodelsforbothbarrgejamminganddeceptionjammingareconstructed，analyzing theirrespectivemechanismsand limitations.Finaly，jamming optimizationisanalyzed fromthree dimensions：polarization，timefrequencycharacteristics，andfrequencyagility.Thestudydemonstratesthat：（1）Dynamicallymaintainingthepolarization mismatch angle within the range of 60∘ to 120∘ yields optimal jamming effectiveness；（2）Employing a "comb spectrum+randomtimedelay"structureinthejammingsignalmakes itdificultfortheradartoextractcontinuousfeatures；（3）A jamming to radaragile bandwidth ratio greater than 1.2 isthecritical threshold for jamming effectiveness.The resultsvalidate thatregulatingthepolarizationmismatchangle，matchingtime-frequencycharacteristics，andoptimizingtheagilebandwidth ratioare key pathways to enhancing jamming effectiveness.

Keywords：activeinterference；mathematical model；polarization confrontation；timefrequencydistribution; frequency change

精确制导武器末制导阶段是决定打击效能的核心环节，而制导雷达作为这一阶段的核心传感器，抗干扰能力直接决定武器系统的战场生存能力和毁伤效能[1]有源干扰通过电磁频谱域的压制与信息域的欺骗，可有效破坏雷达对目标的稳定探测与跟踪，已成为对抗精确制导体系的关键技术手段。（剩余11589字）