基于高阶累积切片的圆阵一维测向算法研究

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中图分类号：TN911.7 文献标识码：A 文章编号：2096-4706（2025）08-0006-05

Abstract：Aiming at the problemof high false alarm rateand low acuracyof circular array direction finding algorithm underambient noise and multipath interference，this paper proposes aone-dimensional direction finding algorithm basedon high-ordercumulative slicing space sparse representation.Firstly，thealgorithmuses the ideaofExpectation Maximization toconstructahigh-order slicematrixcontaining allthe informationofthe incidentdirectionofthe signal andremoving the redundantinformation，soastorealizethespatialsparsefeaturereconstructionoftheequivalentsignaltrengthinthehighoder cumulativeslcesace.Secondlythroughlinearinterpolationandbilateralinterpolation，theeconstructionquantizatioor is reduced，andthecandidateanglesetandthecorespondingovercompletearraymanifoldmatrixareobained.Theiterative optimizationiscariedout，andthentesecondaryreconstrutioniscarriedout.Finallybasedonteresultsofsatialsparse featurereconstruction，thesignalcomponentsareseparated toachievehig-precisiondirection findingofeachcomponent，nd the complexityofthe algorithm is analyzed.Thesimulationresultsshow thatcompared with the typical sparsereconstruction algorithms，when the Signal-to-Noise Ratio is - 1 0 d B ，the direction finding accuracy of the proposed algorithm is increased by about 4 times，and the angle resolution probability is increased by about 80 %

Keywords：array direction finding; spatial reconstruction; multipath interference; cumulative slicing

0 引言

阵列测向是阵列信号处理的重要分支，具有波束控制灵活、信号增益高及抗干扰能力强的优点，广泛应用于卫星导航、雷达预警和无线电监测等多个领域。（剩余7003字）