在无线传感器网络目标定位中,由于网络中节点能量是有限的,所以对节点能量如何进行合理利用,延长整个网络工作时间具有必要性;在保证目标定位准确度高的前提下,提出一种基于能量均衡的目标定位算法,该算法有效考虑节点剩余能量和节点覆盖率的权重ω1和ω2,结合两者,从而选择适合的节点对目标进行定位;仿真结果表明,该算法减少了目标定位过程中传输的消息数量,ω1和ω2选取不同对于剩余能量标准差有很大影响,合理选择它们可以减小节点失效时间和能量消耗,并同时延长无线传感器网络的工作寿命。
Because of the limited energy of sensor node,it's very important to use the energy reasonably to prong the lifetime of the WSN.To ensure high accuracy in position,this paper presents a new target localization algorithm based on energy balance.This algorithm considers coverage ω1and energy ω2of the node and also combines them together very well.The simulation shows that the information could be reduced and ω1 and ω2has different effect on standard deviation.If they are selected reasonably,the energy of the node could be saved and it also prongs the lifetime of WSN at the same time in the process of localization.