基于一种深度调节机制的UWSNs节点部署算法研究

UWSNs Node Deployment Algorithm Research Based on Depth-adjustment Scheme

水下无线传感器网络(UWSNs)的节点部署方式很大程度上决定了整个网络的寿命和性能,针对水下特殊的三维环境,采用0-1感知模型的各节点以其沃罗诺伊多边形面积为考量依据,提出一种深度调节机制以实现对目标水域的分层覆盖,该策略在降低节点部署复杂度的同时有效提高了网络的覆盖率。仿真实验中,通过考察网络覆盖率和节点间的连通率验证了该部署算法的有效性。结果表明,当节点感知半径达到60 m时可以实现95%以上的覆盖范围,同时,节点通信半径与感知半径的比值很大程度决定了网络连通性能。

Node deployment strategy is largely determines the whole network lifetime and performance of underwater sensor networks （UWSNs）.According to the special three-dimensional underwater environment and the node with its Voronoi polygon ar- ea for consideration basis using 0-1 perceptual model nodes,this paper presented a depth-adjustment mechanism in order to real- ize the stratified coverage of the target area. This strategy can effectively improve the network coverage while reducing the complexity of node deployment.Simulation results verify the effectiveness of the proposed algorithm by network coverage and connec- tivity between nodes.The results indicate that the coverage of 95% or more can be achieved when the node sensing radius reaches 60 m, and the ratio of the node communication radius to the sensing radius determines the performance of the network connectivity.