基于高階累積切片的圓陣一維測向算法研究

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中圖分類號：TN911.7 文獻標識碼：A 文章編號：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

陣列測向是陣列信號處理的重要分支，具有波束控制靈活、信號增益高及抗干擾能力強的優(yōu)點，廣泛應用于衛(wèi)星導航、雷達預警和無線電監(jiān)測等多個領域。（剩余7003字）