锚节点水面部署的三维水下传感网定位算法

Localization Algorithm for 3-D Underwater Wireless Sensor Networks with Surface-deployed Anchors

受应用条件制约,水下三维传感网的锚节点很多时候只能水面部署,这对于多跳定位算法而言是一种挑战.由此提出一种从水面向下逐级迭代求精的定位策略,防止了下级的定位误差向上扩散,并利用水下节点易测的深度信息对定位中的多边迭代进行约束,进一步补偿锚节点部署不均带来的各向异性.

Due to technical limitations,mostly the anchor nodes can only be deployed at the ocean surface in underwater wireless sensor networks.This is a challenge to multi hop underwater localization.In this paper,we proposed a top-down layer by layer iterated scheme,and used depth information,which is easy accessed in underwater environment,to remedy the anisotropy caused by surfaced anchors.