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Discussion on the Variable-angle Transducer for Acoustic in-situ Measurement in Seafloor Sediments
Author(s): 
Pages: 32-36
Year: Issue:  1
Journal: OCEAN TECHNOLOGY

Keyword:  原位测量海底沉积物换能器水下载体声速;
Abstract: 海底沉积物的声学测量是海底测深的关键技术之一,应用于海底地形地貌测量、海洋矿产资源开采和海底工程建设等.海底沉积物声学测量方法中的原位测量方法可以避免保真采样法的强扰动性和遥测法的准确度、精度及灵敏度的不确定性等缺点,如何改进原位测量系统渐成为海底探测的研究热点.通过分析现有海底沉积物原位测量设备测试换能器的工作原理,针对垂直压入方式换能器测量深度有限,提出了一种通过改变换能器压入沉积物的角度来增加测量深度的方法.在理论上论证出在不低于换能器接收阈值时,测量深度随着掠射角的增加而增加.在不增加压入深度的前提下提供了一种增加测量深度方法.
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