講演抄録/キーワード |
講演名 |
2012-08-28 11:00
Bearing Error Estimation in Inhomogeneous Ocean Applying the Three-Dimensional BELLHOP Propagation Model ○Youngnam Na・Jungsoo Park・Jooyoung Han(Agency for Defense Development)・Michael Porter(HLS Research) US2012-49 |
抄録 |
(和) |
This study discusses a 3-D version of propagation loss model employing the Gaussian Beam Tracing. The so-called existing Nx2D or 2.5D approach neglects the refraction of sound energy out of the vertical plane associated with each bearing line. Such out-of-plane effects can be crucial when there are significant horizontal gradients in the environment. These occur with strong oceanographic features such as nonlinear internal waves, or in areas with strong bathymetry features. We deliver some simulation results for the cases including truncated wedge, seamount, free space and steep bathymetry. |
(英) |
This study discusses a 3-D version of propagation loss model employing the Gaussian Beam Tracing. The so-called existing Nx2D or 2.5D approach neglects the refraction of sound energy out of the vertical plane associated with each bearing line. Such out-of-plane effects can be crucial when there are significant horizontal gradients in the environment. These occur with strong oceanographic features such as nonlinear internal waves, or in areas with strong bathymetry features. We deliver some simulation results for the cases including truncated wedge, seamount, free space and steep bathymetry. |
キーワード |
(和) |
BELLHOP-3D / Propagation Loss / Inhomogeneous Ocean / Horizontal Refraction / / / / |
(英) |
BELLHOP-3D / Propagation Loss / Inhomogeneous Ocean / Horizontal Refraction / / / / |
文献情報 |
信学技報, vol. 112, no. 186, US2012-49, pp. 77-80, 2012年8月. |
資料番号 |
US2012-49 |
発行日 |
2012-08-20 (US) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
US2012-49 |