基于相关性的雷达海面弱目标检测技术

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中图分类号：TN957.51 文献标志码：A DOI： 10.12305/j.issn.1001-506X.2026.03.06

Radar sea surface weak target detection technology based on correlation

WANG Wei， YANG Yong*， HAN Jingwen （ColegeofElectronicScienceandTechnology，NationalUniversityofDefenseTechnology，Changsha41073，China）

Abstract：To addressthe problem of detecting weak radar targets in the presence of sea cluter，aradar sea surface weaktargetdetection technologybasedoncorrelationis proposed.Thespatial distributioncharacteristicsofamplitude tails is proposedto estimate therangecellwhere thetarget is located，filtersout theestimatedtarget rangecelldatato define the clutersubspace，andthencalculatesanorthogonal projectionmatrixbasedonthede-tailedclutersubspacetoachieveclutter suppression.Subsequently，according to the distributionchanges ofthelargest eigenvalueofthecovariance matrix inthe detailedrthogonalprojectionspace，thelargesteigenvalueisselectedas theteststatisticfortargetdetection.Theresultsofreal datavalidation from IPIX （intellgent pixel processng X-band）radarand sea-detecting radar data-sharing program demonstrate that the proposed method outperforms cellaveraging constant false alarmrate，de-tailed orthogonal projection， maximumeigenvalueandthecombinationoforthogonalprojectionandmaxeigenvaluedetectionalgorithms.Itisproventhat theproposed algorithm exhibits good robustness.

Keywords：radar target detection； amplitude tailing；orthogonal projection； correlation；maximum eigenvalue

0 引言

雷达检测海上目标时，不可避免地会受到海杂波的干扰[1-3]，在复杂多变的海杂波背景下，检测任务的难点集中于回波能量较弱的无人艇、潜望镜等小型目标。（剩余11707字）