【摘要】 叙述了在原来研制的宽视场角、全景深水下激光电视的基础上研制成的新型激光差频扫描水下三维视觉传感系统,它在提供二维图象的同时,还能实现全景深、大视场(水下75°×28°)的水下三维测量。使用了三维扫描接收装置、光电倍增管作为高灵敏度的窄视场接收器,可调整基线长度,并可克服水下散射背景光。系统在混浊水中可测范围为3～4个哀减长度。更多还原

【Abstract】 A novel laser difference—frequency scanning underwater 3-D vision sensing system based on the original developed wide field angle panoramic underwater laser TV is described. The 3-D measurement of panoramic large field (underwater 25°×28°) can be realized when the 2-D image is provided.Using 3-D scanning receiving unit and photomultiplier as high sensitive narrow field rece- iver, so the base line leingth can be adjusted, and the light in underwater scattering background can bo overcome. The measuring range of the system is equivalent to 3～4 attenuation lengths in muddy water.更多还原