Abstract: Autonomous underwater vehicle (AUV) can be used for monitoring three-dimensional marine environment, thanks to its characters of covering large area and strong automation. The authors introduce marine monitoring technology by AUV in the world, and then present their own autonomous marine monitoring system. The system has two advantages: it can cover larger area than other AUVs and collect more autonomous data acquisition than a fixed float meter. The scheme of data acquisition, the procedure of autonomous acquisition and layered software architecture are given. The large-area field trial is first carried out in China, which shows that marine environmental three-dimensional monitoring by AUV is practical.

Key words: autonomous underwater vehicle, autonomous underwater vehicle, ocean environment, ocean environment, monitor, monitor, data acquisition, data acquisition