水下鬼成像技术研究

项目名称： 水下鬼成像技术研究

项目编号： No.61501077

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： 赵明

作者单位： 大连海事大学

项目金额： 23万元

中文摘要： 水下光学探测是认识海洋、开发和利用海洋的重要手段。然而，由于水体对光波具有严重的影响，主要包括水下散射和水下湍流，水下光学探测具有探测距离短、图像质量较差等缺点。本课题中首次探索将鬼成像技术应用于水下探测中，并根据水下特性设计了水下鬼成像探测系统方案。通过从理论和实验两方面研究水下湍流和前向散射对测量矩阵的影响，掌握水下特性对鬼成像的影响机理，并以此为基础，开展随水下湍流和散射不敏感的测量矩阵研究；而后研究基于偏振的后向散射光抑制算法和基于压缩感知的鬼成像重建算法，将探测数据重建为探测图像；最终，搭建水下鬼成像实验系统验证所提出的水下鬼成像技术。本课题研究成果将为水下光学探测技术提供一种新的技术途径，同时也将推动鬼成像技术在光学散射媒质的研究。

中文关键词： 水下光学成像；主动光学探测；水下激光探测

英文摘要： Underwater optical detection technique is a significant way of understanding, development and utilization of the ocean. However, underwater scatter and turbulence have a strong impact on the optical wave, and thus the underwater optical detection range is very limited, and its image quality is poor. This project, for the first time, proposes the underwater ghost imaging technology, and designs a novel underwater ghost imaging detection scheme according to the underwater characteristics. The impact of underwater turbulence and scatter on the measurement matrix is studied from both theoretical and experimental aspects, and thus the mechanism of underwater impact on the ghost imaging is known. Based on such research, we try to design a new measurement matrix which is insensitive to underwater turbulence and scattering. And then the polarization algorithm is investigated to remove the backscattered light, and ghost imaging reconstruction algorithm based on compressed sensing is studied to restore the final image. Finally, we construct an underwater ghost imaging experiment to verify the proposed underwater ghost imaging technology. This research will provide a new way of underwater optical detection technology, and promote research on the ghost imaging in the optical scattering medium.

英文关键词： underwater optical imaging;active optical detection;underwater laser detection