A fisheries application of a dual-frequency identification sonar acoustic camera
A fisheries application of a dual-frequency identification sonar acoustic camera
复制标题
DOI：
10.1016/s1054-3139(03)00036-5
复制
发表时间：
2003-06-01
影响因子：
3.3
通讯作者：
Peters, RD
中科院分区：
文献类型：
--
作者：
Moursund, RA;Carlson, TJ;Peters, RD
美国陆军工程兵团正在探索声学摄像机在水电设施鱼类通道研究中的应用。“双频识别声纳”（DIDSON）是一种高清晰度成像声纳，可获得近视频质量的图像，用于识别水下物体。最初由华盛顿大学应用物理实验室为美国海军开发，它弥补了现有的巡航评估声纳和光学系统之间的差距。该声学摄像机12米范围内的图像足够清晰，可以观察到鱼类在游动时的波动，并在能见度为零的水中确定其方向。在1.8MHz的高频模式下，该系统包括在29度视场上的96个波束。高分辨率和快速帧速率提供了真实的目标可视化。DIDSON可用于传统水下相机受到低亮度和高浊度限制的地方。(C)2003年国际海洋考察理事会。由Elsevier Science Ltd.出版，版权所有。
The uses of an acoustic camera in fish-passage research at hydropower facilities are being explored by the U.S. Army Corps of Engineers. The "Dual-Frequency Identification Sonar" (DIDSON) is a high-definition imaging sonar that obtains near-video quality images for the identification of objects underwater. Developed originally for the U.S. Navy by the University of Washington's Applied Physics Laboratory, it bridges the gap between existing fisheries-assessment sonar and optical systems. The images within 12 m of this acoustic camera are sufficiently clear such that fish can be observed undulating as they swim and their orientation ascertained in otherwise zero-visibility water. In the 1.8 MHz high-frequency mode, this system comprises 96 beams over a 29degrees field-of-view. The high resolution and fast frame rate provide target visualization in real time. The DIDSON can be used where conventional underwater cameras would be limited by low light levels and high turbidity. (C) 2003 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd. All rights reserved.