WSN中一种新的锚节点分布方式

摘要

现有无线传感器网络( WSN)中锚节点分布方式大多是采用随机分布方式，对于无需测距的算法定位精度不高。为提高DV-Hop算法节点定位精度，提出一种新的人工部署的锚节点分布方式，将锚节点放置在小区域的内切圆或内切球的中心，并分别在二维、三维空间比较分析在不同通信半径、不同锚节点覆盖率下新分布方式与随机分布方式对节点定位精度的影响规律。 MATLAB仿真结果表明，提出的锚节点分布方式在二维空间和三维空间能提高DV-Hop算法的定位精度，同时降低了网络成本和节点能量消耗。%The distribution of anchor nodes in the existing WSN ( Wireless Sensor Network) is mostly based on random distribution, and the positioning accuracy is not so high for the algorithm without ranging. In or-der to improve the positioning accuracy of DV-Hop algorithm, a new anchor node deployment strategy is proposed. Anchor nodes are placed in the center of the small area of inscribed circle or sphere, and re-spectively in 2 D and 3 D space comparative analyses on the effect of node localization accuracy in different communication radius, different anchor-node covering rates under the new distribution and random distri-bution are done. MATLAB simulation results indicate that the anchor nodes distribution strategy proposed in this paper could improve the positioning accuracy of DV-Hop algorithm in 2 D space and 3 D space while reducing the network cost and node energy consumption.