Underwater acoustic imaging: image due to a specular reflector in the geometrical-acoustics limit

被引：4

作者：

Blair, David G. ^{[1
]}

机构：

[1] Univ Sydney, Dept Civil Engn, Ocean Technol Grp J05, Sydney, NSW 2006, Australia

来源：

JOURNAL OF MARINE SCIENCE AND TECHNOLOGY | 2006年 / 11卷 / 02期

关键词：

acoustic imaging; specular reflector; acoustic array; geometrical acoustics; radius of curvature;

D O I：

10.1007/s00773-005-0208-z

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

In underwater acoustic imaging, which is used to produce high-quality images in turbid waters, a specular reflector can produce a "pseudoimage" of the receiving array at the reflecting surface. Based on the "geometrical approximation" (which is similar to geometrical acoustics), formulae are derived for the size and shape of the pseudoimage for both flat and curved reflectors. For curved reflectors, described by two principal radii of curvature, the formulae also assume the "large-range approximation." The formulae allow radii of curvature to be determined from an image. Also discussed briefly are some possible extensions and the role of nongeometrical effects.

引用

页码：123 / 130

页数：8