基于频域滤波的无人机载预警雷达抗主瓣无意干扰方法

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中图分类号： TN957 文献标志码：A DOI： 10.12305/j.issn.1001-506X.2026.03.10

Abstract：For the operating frequency bands of airborme early warning radars are continuously expanding towards lower frequency ranges，more wirelesscommunication devices share the same frequency bands with radar systems，causing significant unintentional jamming to unmanned aerial vehicle （UAV）-borne radars during operation and severely affecting its target detection performance.Toaddress these isues，a mainlobe unintentionaljamming suppressionarchitecture and method based on pasive/active dual-mode coordination are proposed while keping the parameters of the airbome radar system unchanged.Firstly，in pasive mode，the frequency and bandwidth of each mainlobe jamming signal are estimated using adaptive beamforming techniques and constant false alarmrate detection criteria.Then，in active mode，the suppressionof mainlobeunintentional jammingisachievedthrough frequencydomain filtering.At thesame time，thefilteredcolornoiseis whitened to white noisethrough noise compensation，which further improves the target detection performance while achieving jammingsuppression.Finally，theeffctivenesofthe proposed methodisverifiedthroughsimulation experiments.

Keywords： airborme radar; mainlobe unintentional jamming； frequency spectrum estimation； frequency-domain filtering；noise compensation

0 引言

无人机载雷达凭借其长续航、低成本的优势，有效解决了长时间、大范围的预警探测问题。（剩余15950字）