Covering method of wireless sensor network in marine environment

[0003] Due to the particularity of the marine environment, the marine wireless sensor network has its unique characteristics compared with the land wireless sensor network: first, the monitoring area of ​​the marine environment is usually larger, and the underwater remote sensor network can be reached by acoustic communication. Distance transmission, and underwater nodes are expensive and not suitable for dense deployment, so ocean wireless sensor networks are usually very sparse; second, underwater sensor nodes are usually randomly broadcast to designated areas by aircraft or ships, and underwater nodes need to have self-organizing The ability of networking; third, because the nodes in the sea are affected by the current or wind and deviate from the original position, the network topology will change, so the marine sensor network is usually dynamic; due to the limited energy of the sensor, and the replacement Therefore, how to reduce the energy consumption of sensor nodes and prolong the network life cycle while ensuring the coverage area or coverage target is an important issue in the application of marine wireless sensor networks.