提出了在海缆中嵌入光纤光栅水听器监测海缆附近的拖锚情况, 实现在海缆受损前采取措施的安全预警方法; 分析了声源特性, 并基于台湾海峡建立声场模型, 对TL(声传播损失)进行了仿真。仿真结果表明, 当各水听器间的距离为500 m时, 该方法可以确定海底光缆沿线约1 km范围内声源的位置。

This paper presents a new security precaution measure for submarine fiber cables, i.e. embedding fiber grating hydrophones in the cable to monitor anchor dragging in the vicinity of the submarine cables, analyzes the traits of the acoustic sources and builds a acoustic field model on the basis of Taiwan Strait and simulates the acoustic Transmission Loss (TL). The simulation results show that when these hydrophones are spaced 500 m apart, this method can be used to determine the location of the acoustic sources in the scope of about 1 km along the submarine cables.