后向散斑记忆水下目标激光远距离成像的理论与实验研究

项目名称： 后向散斑记忆水下目标激光远距离成像的理论与实验研究

项目编号： No.61505184

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 彭波

作者单位： 中国工程物理研究院电子工程研究所

项目金额： 21万元

中文摘要： 水下目标的激光远距离成像是海事搜救、海洋勘探、军事侦察等领域面临的重大难题,而水体散射是导致这一问题的根本原因。本课题以水下激光的远距离成像为主题，拟采取理论分析、数值模拟和光学实验相结合的方式，通过研究浑浊水体后向散斑的记忆效应，提出一种用于水下目标激光远距离探测的视角散斑记忆成像方法。具体研究内容包括：理论分析浑浊水体的后向散斑记忆特性；构建后向散斑视角记忆的理论仿真模型；实验研究后向散斑的空间强度相关性及其影响因素；研究视角散斑中目标信息的记忆机理；最后开展成像验证实验，建立成像方法。本课题的研究将突破目前水下激光成像的距离制约，为水下目标的激光远距离探测开辟新的技术途径。

中文关键词： 水下目标成像；浑浊水体；后向散射；散斑记忆效应；激光远距离成像

英文摘要： Long-range laser imaging of underwater objects has been a major difficulty in maritime search-and-rescue, ocean exploration, and military reconnaissance and so on. The key of this problem primarily ascribes the water scattering. This project, focusing on the Long-range imaging of underwater laser, intends to use the theoretical analysis, numerical simulation and optical experiments for further research on the memory effect of backscattered speckle of turbid water, to propose a real-time speckle array imaging method with different view angles for underwater objects. Researches Include: theoretical calculations of the memory effect of backscattered speckle for turbid water; construction of the theoretical simulation model of backscattered speckle; experimental study of the spatial intensity to the view-angle speckle correlation and its influencing factors; research on memory mechanism of objects information in backscattered speckle; finally designing the experiment program, implementing the experimental research and ascertaining the imaging method. The study of this subject will break through the current distance constraints of underwater laser imaging, and providing the technical approach for the long-range laser imaging of underwater objects.

英文关键词： imaging of underwater objects;turbid waters;backscattering;memory effect of speckles;long-range imaging of laser