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1、AbstractWidebandbeamforminghasbeenwidelyappliedtoradar,communicationandsonar.Asthewidebandsignalsarebecomingincreasinglypopular,theresearchonwidebandconstantbeamwidthbeamforminghasbeenconsideredasoneofthefocalpointsstudy.Thispaperfocusesonwidebandconstantbe
2、amwidthbeamforming,adaptivebeamwidthbeamforming,androbustbeamwidthbeamforming.Themainworkcanbesummarizedasfollows.1.Anovelwidebandconstantbeamwidthbeamformingalgorithmisproposedbyusingdiscretespatialresponsevariation(SRV)constraint.Firstly,basedontheSDLmode
3、l,SRViscomputedinthediscreteform.Threenewmethodsareproposed.BasedonSDLstructureisformedfromthebroadbandsignalbeamforming,inresponsetofluctuationsinthedegreeofrestraintontheuseofspace,theconstraintconditionsofSRVisdiscrete,threekindsofnewalgorithmdesign,resp
4、ectivelyfocusingonthesidelobeinterferencesuppression,constantbeamwidthremainslevel,andimprovetheformationofLCMVbroadbandbeamforming.DetaileddescriptionoftheconstraintsinvolvedSRVintroducedbroadbandsignalbeamformingwhenthesettingonthetransformationofvariousc
5、onstraintconditionsandthesolvingprocess,theuseofthestandardformofthetwoorderconeoptimizationtheoptimalweightvectorinsteadofthecomplexsearchproblem,reducethecomputationalcomplexity,andtheuseofLagrangemultipliermethodhasbeenanalyticalexpressionsoftheoptimalwe
6、ightvectortoaddtheSRVconstraintsinLCMVmodel.Thesimulationexperimentshowsthatthemethodofwidebandsignalreceivingperformancebetter,strongerabilityofinterferencesuppression.2.Anovelbeamspaceadaptivebeamformingalgorithmisproposed.Theapplicationofadaptivebeamform
7、inginthebroadbandsignalthroughtheresearchonthebeamspace,thefirstdetaileddescriptionofthepretreatmentprocessofbeamspace,dimensionreductionusingthefulldimensionalbeamspace,designofbeamspacebeamforming,basedonbroadbandsignaladaptivebeamformerdesign,theuseofdif
8、ferentpointofFIB,thethearraydataintobeamspaceprocessing,improvetheexistingmethodsoftheupdateisslow.Finallywiththegeneralizedsidelobecancellercomparison,simulationexperiment,thealgorithmofthebeamforming
