Collaborative Research: Calibrating Multibeam Sonars for Surveying Midwater Fish

合作研究：校准多波束声纳以测量中层水域鱼类

• 批准号: 0002842
• 负责人: Larry Mayer
• 金额: $ 34.29万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-12-15 至 2004-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0002842&HistoricalAwards=false
• 关键词: Collaborative; Research; Calibrating; Multibeam; Sonars

This collaborative project between the Woods Hole Oceanographic Institution and the University of New Hampshire addresses an ocean science and fisheries management requirement for improved capabilities for measuring the abundance and distribution of fish and other organisms in the open ocean. Newly available multibeam echo sounders provide the capability to record and analyze acoustic returns on individual beams, which represents a new capability for the ocean research community. A multibeam echo sounder will be tested and calibrated in three venues: fresh-water test tank, sea-well test facility, and in situ on a towed vehicle. The objectives of this calibration exercise are the determination of the on-axis response, sensitivity limits, hence dynamic range, and directivity patterns for each beam. The use of acoustic measurements for fish stock abundance and other research applications has been established, but the potential for measuring the numerical density of fish is difficult without a means of calibrating the system in situ. Results from this sonar calibration project will provide a means for attaining better areal coverage without compromising spatial resolution.

伍兹霍尔海洋研究所和新罕布什尔大学之间的这个合作项目解决了海洋科学和渔业管理的要求，以提高测量公海中鱼类和其他生物体的丰度和分布的能力。 新推出的多波束回声测深仪能够记录和分析单个波束的声波回波，这代表了海洋研究界的一项新功能。 多波束回声测深仪将在三个地点进行测试和校准：淡水测试池、海井测试设施和拖车现场。该校准练习的目的是确定每个光束的轴上响应、灵敏度限制、动态范围和方向性图案。声学测量在鱼类种群丰度和其他研究应用中的应用已经确立，但如果没有现场校准系统的方法，测量鱼类数量密度的潜力是困难的。该声纳校准项目的结果将提供一种在不影响空间分辨率的情况下获得更好区域覆盖的方法。