US-France Cooperative Research: Identification by Scattered Sound of an Object in a Shallow Sea

这个为期三年的奖项为美法合作研究提供支持， 利用散射声识别水下物体。 该项目涉及 由罗伯特·P·吉尔伯特领导的特拉华州大学水声研究小组， 法国国家科学研究中心力学与声学实验室 由Armand Wirgin领导的CNRS研究。 他们将研究一类声学逆 浅海的问题。 这些问题涉及识别 被动的、不确定的物体。 这些物体的未知参数就是它的位置 以及相对于某个参考系的形状。 调查人员将利用一个事件 声波，它从物体上散射并发出信号。 检测到的信号将 在计算机的帮助下，通过适当的反演算法进行分析。 的 美国一个研究小组成功地研究了一个均匀的二维 反射海底的物体。 在这项合作中，他们的目标是在真实的时间内确定一个 三维物体在不均匀的海洋中。 这种合作利用了美国和法国的互补专业知识 investigators. 研究结果最终可能应用于搜索水雷、导航 障碍物、沉船、污染废物沉积物和潜艇。

This three-year award provides support for US-France cooperative research on the identification of underwater objects using scattered sound. The project involves the underwater acoustic group at the University of Delaware, led by Robert P. Gilbert, and the Laboratory for Mechanics and Acoustics of the French National Center for Scientific Research (CNRS), led by Armand Wirgin. They will study a class of acoustic inverse problems in a shallow sea. These problems are concerned with the identification of passive, undetermined objects. The unknown parameters of these objects are its location and with respect to some reference frame, its shape. The investigators will use an incident acoustic wave, which is scattered off an object and emits a signal. The detected signal will be analyzed, with the help of a computer, by means of a suitable inversion algorithm. The US research group has investigated successfully a case of a homogenous two-dimensional object in a reflective seabed. In this collaboration, their goal is to identify in real time a three-dimensional object in a non-homogenous sea. This collaboration takes advantage of complementary expertise of US and French investigators. The results may eventually be applied to searches for mines, navigational obstacles, wrecks, polluting waste deposits, and submarines.