基于移动锚节点的无线传感器网络节点定位

为了更好地解决无线传感器网络节点定位精度和复杂测距技术之间的矛盾,提出了一种基于移动锚节点的非测距的定位技术。9个装备有GPS接收机的可移动锚节点形成一个圆形定位区域,位于定位区域内的待定位节点接收锚节点发射的信号,并记录接收信号强度。比较接收信号强度确定自己所处区域,从而实现定位。仿真结果表明,该节点定位技术平均定位精度约为10%,与其他类似定位技术相比能够明显提高节点定位精度。

Localization in wireless sensor networks with mobile anchor nodes

A range-free localization scheme using mobile anchor nodes was developed to balance the accuracy of the localization result with the complex technologies for the distance and angle estimates in wireless sensor networks. Nine anchor nodes equipped with the GPS were assumed in a circle. Nodes inside the circle record the received signal strength from the anchor nodes which is then used to compute their locations by comparisons of the received signal strengths. Simulations show that the localization error is about 10% which is better than other range-free mechanisms.