A compact remote-controlled underwater lidar system

摘要

Lidar is an important equipment for the accurate detection of underwater targets. In this paper, a compact and remote-controlled lidar system is described. The system contains four modules which are Q-switch Nd: YAG pulse laser module, photoelectric detector module, data collector module and remote-controlled module. All of the modules are put into a hermetic container. The lidar system can be in operation under the water and carried by an underwater carrier such as ROV (Remotely Operated Vehicle). The operator controls the lidar and downloads the data from the system through a fiber. The system can automatically eliminate the return signal due to the surface wave. The system has been used in underwater bubble detection. A brief description of the lidar system and its operation is present in the paper. The experimental results of underwater bubble measurement are discussed.