水下光学

水下光学无线通信系统的关键技术研究

The Key Technology Research on Underwater Wireless Optical Communication Systems

由于我国尚缺乏满足水色应用要求的水下光学测量仪器，因此提出了一种利用瞬态光谱仪在水面以上进行离水辐射率测量与分析的方法。

As we have no suitable under-water optical instrument , we have proposed a method of spectral measurement with above-water spectrometer .

基于生物光学特性的水下光学信道模型，建立了水下光学通信系统性能分析方法。

An underwater optical channel model which is based on the bio-optical properties is proposed in this paper , and the performance of the underwater optical communications system is evaluated .

针对水下光学成像困难，采用了基于相对熵的水下图像模糊增强方法，改善了图像系统中的图像的质量。

Be aimed at undersea optical imagery difficulty , the undersea image having adopted relative entropy-based is mixed up strengthening method , the image mass in having improved image system .

分析了水下光学、水下声学特点以及水下环境因素对潜水员生理与心理的影响，深入探讨了水下环境对水下无损检测工作的实施及其结果可靠性的影响。

The influences of underwater circumstances on practice of underwater NDT and reliability of test results are analyzed . The underwater optical and acoustical characteristics and the diver 's physiological and psychological reaction are discussed .

为适应高精度水下光学测量的需求，设计研制了多通道水下光谱辐射计。该辐射计可同步测量12波段的下行/上行光谱辐照度和7波段的上行光谱辐亮度。

To meet the need of high-accuracy underwater optical measurements in ocean color remote sensing , an underwater multi-channel spectral radiometer , which can measure downward irradiance and upward irradiance at twelve wavelengths and upward radiance at seven wavelengths simultaneously , have been designed and constructed .

基于蒙特卡罗方法的水下目标光学隐蔽性影响因素分析

Optical Concealment Analysis of Underwater Target Based on Monte Carlo Method of Simulation

利用水下爆炸的光学可见，在浅水水体外将CCD高速摄像机实拍和图像处理技术引入了气泡脉动参数的测试研究，得到了0.3gDDNP装药的气泡半径随时间变化轨迹和脉动周期。

The shoot of high speed video camera and the technology of image manipulation are applied to test and study bubble pulsation parameters according to the optical visibility of underwater blasting . The track of bubble diameter changing with time and the pulsation period of 0.3g DDNP charge are obtained .

在很多应用情况下，油漆或者涂料抵抗暴露在光、热及水环境下物理和光学性能退化的能力非常重要。

The ability of a paint or coating to resist deterioration of its physical and optical properties caused by exposure to light , heat , and water can be very significant for many applications .

本文取得了以下研究成果：（1）从实用角度出发，设计了水了下拖曳式光学成像实验装置，完成了海底图像实时采集系统的开发及图像前期处理方法研究。

The results of the dissertation are presented as follow : ( 1 ) An underwater towed optical vehicle and the images acquisition system was developed , and also an approach for image denoising and enhancement was proposed and tested .

对水下摄影和水下电视摄象技术进行了简要的介绍，包括水下光学特点、器材与设备、潜水员进行水下彩色摄影和水下电视摄象的工艺方法以及记录的编辑与分析等。

Underwater photographic and cable circle television ( CCTV ) techniques are introduced . including underwater optical characteristics . apparatus and instruments .

水的散射作用是造成图像退化的最主要的因素。而且随着拍摄距离的增大，画面反差降低，也使水下光学成像变得十分困难。

The scattering action of water is the main cause of image degeneration . Moreover , with the shooting distance increases , the imaging detail blurreds , and these factors make underwater imaging become very difficult .