在水下激光成像应用中，同步扫描是一种有效抑制后向散射的技术途径。同步扫描水下激光成像系统通过同步扫描形成图像的横向视场，结合载体的纵向平移运动即可获取目标的二维图像。建立激光功率、探测器灵敏度、目标朗伯反射率、目标距离、水体衰减系数、载体速度、扫描转速、横向扫描角、图像分辨率等参数之间的约束关系。当满足这些约束关系时，同步扫描水下激光成像系统可获取无畸变的水下激光图像。
Synchronous scanning is one of the effective methods to eliminate backscattering of water in underwater laser imaging application. Synchronous scanning underwater laser imaging system can get a two-dimensional image by scanning laser beam transversely together with the platform moving forward. In this paper, constraints of laser power, sensitivity of the detector, target lambertian reflectivity, target distance, attenuation coefficient of water, velocity of the platform, speed of revolution, transverse FOV, image resolution etc are established. When these constraints are met, synchronous scanning underwater laser imaging system can get two-dimentional images without distortion.
2018,40(6): 113-116 收稿日期：2017-03-11
DOI：10.3404/j.issn.1672-7649.2018.06.023
分类号：TN249
作者简介：何大华(1973-),男,博士,高级工程师,主要研究方向为水下光电成像技术
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