2014-07-292009-09-242009-03-13SILVA, Hugo Vinícius Leão e. Computacional complexity reduction of direction-of-arrival estimation method through the difference between singular values from spatial covariance matrix. 2009. 92 f. Dissertação (Mestrado em Engenharia) - Universidade Federal de Goiás, Goiânia, 2009.http://repositorio.bc.ufg.br/tede/handle/tde/983This work is concerned with the estimation of Direction-Of-Arrival (DOA) angles of plane waves impinging on a sensor array. Among all methods of estimation found in litera-ture, MODEX (MODE with eXtra roots) outstands for its performance and computational complexity. However, recently, a method called SEAD (SEArch of Direction by differential spectrum) was proposed. It has shown better estimation performance against noise than MODEX has. However, its computational complexity is prohibitive for real-time applications. In order to reduce it s computational complexity, a new estimate selection procedure on SEAD is proposed, that yields to significantly less candidate angles than before. Additionally, the introduction of iterative refinements on estimates has allowed improving resolution as well as complexity reductionapplication/pdfAcesso AbertoArranjo de sensoresULADOAMODEXSEADcomplexidade computacionalSensor array, ULA, DOA, MODEX, SEAD, computational complexity1. Antenas ajustáveis Processamento de sinais 2. Ondas eletro- magnéticas 3. Processamento de sinais Técnicas digitais 4. Com- plexidade computacionalCNPQ::ENGENHARIASDissertação