dc.contributor.author | Tang, Jun | |
dc.contributor.author | Piao, Shengchun | |
dc.contributor.author | Zhang, Haigang | |
dc.contributor.author | Zhang, Minghui | |
dc.contributor.author | Zhu, Hanhao | |
dc.date.accessioned | 2019-06-07T09:04:32Z | |
dc.date.available | 2019-06-07T09:04:32Z | |
dc.date.created | 2019-05-27T10:47:05Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Shengxue Xuebao/Acta Acustica. 2018, 43 (2), 129-136. | nb_NO |
dc.identifier.issn | 0371-0025 | |
dc.identifier.uri | http://hdl.handle.net/11250/2600305 | |
dc.description.abstract | For the application of vector hydrophone in bearing estimation, effects of horizontal refraction on vector-field characteristics in the problem of three-dimensional (3D) underwater sound propagation are studied. Through theoretical analysis, it is shown that with the presence of horizontal refraction, the horizontal displacement is elliptically polarized, which shall be linearly polarized provided there is no horizontal refraction. Simultaneously, the direction of the horizontal component of sound energy flux is deflected due to horizontal refraction, resulting in a deviation of the signal arrival direction from the source bearing and thus arising error of bearing estimation. The 3D vector fields in a series of wedgelike oceans are calculated with the method of source images, and the bearing estimation errors are shown to be larger than 10◦ in some areas. | nb_NO |
dc.language.iso | mis | nb_NO |
dc.publisher | Institute of Acoustics, Chinese Academy of Sciences | nb_NO |
dc.title | Horizontal refraction of sound waves resulting in elliptical polarization of horizontal particle displacement and deflection of horizontal energy flux | nb_NO |
dc.type | Journal article | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 129-136 | nb_NO |
dc.source.volume | 43 | nb_NO |
dc.source.journal | Shengxue Xuebao/Acta Acustica | nb_NO |
dc.source.issue | 2 | nb_NO |
dc.identifier.cristin | 1700386 | |
dc.description.localcode | This article will not be available due to copyright restrictions (c) 2018 by Institute of Acoustics, Chinese Academy of Sciences | nb_NO |
cristin.unitcode | 194,63,35,0 | |
cristin.unitname | Institutt for elektroniske systemer | |
cristin.ispublished | true | |
cristin.fulltext | original | |