利用激光扫描技术实现水下和空间的双向通信。对二维振镜激光扫描系统组成和原理进行了理论描述,讨论了在视距范围内采用扩束装置和振镜系统对激光束实施可靠控制的方案,并在水下光通信系统中有效地完成了对水下和空中运动目标所在区域的扫描。主要对扫描方式、扫描范围和速率间的关系进行了分析,通过系统模拟实验,给出其实现方法和相关的实验数据。依据光线反射原理,着重分析了机械角度和光学角度间的数学关系,经实验推算,得出了矩形扫描和矩形扫描面积的近似计算公式。实验证明了这种通信方式和扫描技术的可行性,为后续研究和实际应用奠定了良好基础。

The underwater and aerial inter-communication is realized with laser scanning technology. The construction and the principle of the two-dimensional galvanometric scanner laser scanning system are theoretically described. The methods to effectively control the laser beam with bunch expanding devices and the galvanometric scanner system in the visible range and finish the scanning of the area of the goal underwater and in the air in the underwater optical communication system. And the relation among the scanning way, the scanning range and the speed of scanning is referred mainly. With the systematical simulated experiment, the realizing way and the related experimental data are obtained. Based on the light reflection principle, the mathematical relation of the mechanical angle and the optical angle is emphasized. With the experiment, the approximate calculation formulas about the rectangular scanning and the rectangular scanning area are derived. The experiment proves the feasibility of the communication method and the scanning technology, which establish the foundation for the forthcoming research and practical application.