摘要： 定义感知覆盖、通信覆盖和连通覆盖3个基本概念，并给出它们的物理模型和数学模型。提出二维区域上的正六边形节点覆盖模型，证明该模型是重复最少的无漏洞覆盖模型。分析基于正六边形节点覆盖模型的二维区域覆盖，当节点发射半径大于或等于 倍感知半径时，可保证网络的通信覆盖和连通覆盖的最少邻居节点数为6，节点感知覆盖率为82.7%。研究结果表明，正六边形节点覆盖模型更适于二维区域覆盖。

关键词: 无线传感器网络, 覆盖模型, 邻居节点, 发射半径, 覆盖数

Abstract: This paper defines three basic conception including sensorial coverage, communication coverage and connectivity coverage, and gives their physical models and mathematical models. It proposes the regular hexagonal node coverage model applying to 2-D region. It is proved that the model can get coverage to repeat the least without loopholes in 2-D region. The least neighbor nodes to ensure connectivity coverage and communication coverage are 6 for 2-D regional coverage based on the regular hexagonal node coverage model, when launching radius of the node is greater than or equal to times of sensorial radius. Node’s sensorial coverage rate is 82.7%. Study result shows that the regular hexagonal node coverage model is more suitable to the 2-D region.

Key words: Wireless Sensor Networks(WSNs), coverage model, neighbor node, launch radius, coverage number

中图分类号: 

• TP301