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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avaliação do efeito de acoplamento eletromagnético sobre a estimação de ângulos de incidência de ondas planas / Evaluation of the electromagnetic coupling effect on the estimation of incidents angles of plane waves

Coelho, André Almeida Souza 19 February 2018 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-05-29T12:47:57Z No. of bitstreams: 2 Dissertação - André Almeida Souza Coelho - 2018.pdf: 12771064 bytes, checksum: b6418151bb082eeffbdb1692392e483e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-05-29T12:49:33Z (GMT) No. of bitstreams: 2 Dissertação - André Almeida Souza Coelho - 2018.pdf: 12771064 bytes, checksum: b6418151bb082eeffbdb1692392e483e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-05-29T12:49:33Z (GMT). No. of bitstreams: 2 Dissertação - André Almeida Souza Coelho - 2018.pdf: 12771064 bytes, checksum: b6418151bb082eeffbdb1692392e483e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-02-19 / This work deals with the problem of estimation of incident angles (DOA) of plane waves on a linear array of sensors taking into account the mutual coupling between the sensors. MUSIC and SEAD methods are analyzed with and without coupling, in the cases of correlated and uncorrelated signals, and a compensation method is applied to minimize estimation errors. Several results are obtained and the statistical performance of MUSIC and SEAD is evaluated, proposing an application scenario for SEAD when under the influence of mutual coupling between the sensors. / Este trabalho aborda o problema de estimação de ângulos de incidência (DOA) de ondas planas sobre um arranjo linear de sensores levando em consideração o acoplamento mútuo entre os sensores. São analisados os métodos MUSIC e SEAD com e sem acoplamento, nos casos de sinais descorrelacionados e correlacionados, e aplicado um método de compensação para minimizar os erros de estimação. Diversos resultados são obtidos e o desempenho estatístico do MUSIC e SEAD é avaliado, propondo um cenário de aplicação para o SEAD quando sob a influência do acoplamento mútuo entre os sensores.

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