Frogman and underwater vehicle detection device based on blue-green laser

The invention discloses a novel frogman and underwater vehicle detection device in the underwater field, which uses blue-green laser as a detection carrier, is anchored on an important waterway and aseabed (or riverbed) of a port, and intercepts and alarms small targets such as underwater frogmen and underwater vehicles through multi-transmitting and multi-receiving. The device comprises a floating ball, a force-bearing composite cable, a blue-green laser transceiving module and an anchor seat. The detection equipment is anchored on an important water channel and a seabed (or riverbed) of a port, the blue-green laser transceiving module receives and transmits optical signals according to setting, an optical fence is formed between anchor chains, data are fed back to a shore base station,and if receiving and transmitting are abnormal, frogman and underwater vehicle detection is achieved through tracking judgment. The problem that frogman sonar is interfered by ships on the water surface is avoided, the problem