一种激光扫描水下成像系统的衰减长度值研究

简述了水下目标激光成像方法和优点。并描述了一种水下连续蓝绿激光点扫描，微光增强ＣＣＤ面成像实验系统。分析了该系统的物理模型和计算公式。验证：处于对比度极限模式工作时。在水质及目标确定条件下，该值也许可成为判断系统优劣的依据。

Study of AL Value of Underwater Imaging System by Laser-Scanning

The virtues and the ways of laser imaging for underwater target are described. A kind of underwater experimental system with micro-intensified CCD imaging and continuous blue-green laser-spot scanning is discussed, The physical model and computer formula of the system are analysed. The experimenu show that when it works under the contrast limitation model, its 1+(cos θ)/3]CRmax (ie. attenuation length-AL) value kept eontant. When water quality and target are certain, the value may become a basis for criteria of system suporiority.