文档介绍：‘‘Ravleighlimit'’intheconventionalbeam—formingmethodandhavetheexcellentmerits,suchasabilitytoestimatemultiplesourcesatthesametime,,TheMLdirectionfmding’Scapabilityisveryexcellent,,,culturalalgorithmandtheirimprovedalgorithmstosolvethemaximumlikelihoodlocalizationofmultiplesourcesinthenon-:(1)(2)MLDirectionFindingMethodBasedonchaosoptimizationalgorithm(3)MLDirectionFindingMethodBasedonculturalalgorithm(4)AnimprovedCulturalalgorithmusedonMLDirectionFinding(5):-orderarrayextensionwhichCanimprovetheusetheuseefficiencyofthearrayelementsremarkably,itCanalsorestraintheGaussiancolornoise,butit哈尔滨T程大学硕十学位论文can’tworkwhentheincidentsourcesarecoherent;,butwemusthavetheexactestimationorpriorknowledgeofthenumberandstructureofthecoherentsources,putationalintelligencemethodssuchaschaosoptimizationalgorithm,putationalloadoftheMLEmarkedly,andthesearchpatternsofthemal