基于距离的分布式无线传感器网络定位算法

Range-based and distributed node localization in wireless sensor networks

针对水下无线传感器节点的定位问题进行研究,提出了一种可实现网络规模升级的分布式无信标节点的自定位算法。该定位算法无须额外的硬件支持,仅采用节点间的距离信息建立相对坐标系,确定各节点的相对位置。详细介绍了该算法的实现过程,通过仿真讨论了求精过程、通信半径等对定位误差的影响,并验证了该算法的合理性。为目标跟踪、地理路由、网络管理等系统功能提供了有力的技术支持。

This paper set out to explore node localization in underwater wireless sensor networks and proposed a scalable and distributed anchor-free algorithm of node localization. The algorithm had no use for additional hardware and only adopted the distances between the nodes to build a relative coordinate system on which to compute relative position of all nodes. It intro- duced the algorithm in detail and discussed the influence of refinement process and communication radius to the precision. Simulation results show that the proposed localization of node is reasonable. The algorithm of node localization is capable of supporting the further step of target-tracking, geography route and administration of networks efficiently and precisely.