Abstract:Sonar image object detection is an important part of underwater exploration, submarine rescue, hostile target reconnaissance and other tasks. The breakthrough of deep learning related technologies has brought new opportunities for the development of this field. The performance of sonar image object detection algorithm based on deep learning is better than traditional methods, but the relevant systematic research and application are still insufficient. Therefore, a sonar image object detection system is designed to meet the requirements of accuracy, speed, portability, extensibility, and deployment environment of the system in practical applications by taking advantage of the data driven advantages of the deep learning model. The system consists of three subsystems: data set generation, algorithm model training and testing, and model deployment application, which is applied to the underwater suspicious target detection task. The experimental results show that the object detection system has good performance in the test data and practical applications.