论文部分内容阅读
针对固定节点组成的传统无线传感器网络在进行目标跟踪时存在的能耗过高和覆盖空洞问题,提出在传统传感器网络中引入少量移动性节点组成异构传感器网络进行目标跟踪的方案.基于较传统0/1监测模型更为实际的概率监测模型,提出一种协同调度移动节点和固定节点工作的算法来对移动目标进行跟踪.移动节点对目标实施近距离的移动式跟踪,减少了处于活跃状态的固定节点数量,节约了能耗.此外,移动节点可以移动进入空洞监测目标,解决了传统网络不能监测覆盖空洞中的目标的问题.基于NS2的实验结果表明所提出的跟踪方法可以大幅度减少固定节点的能耗并提高跟踪质量,证明了其有效性.
Aiming at the problems of high energy consumption and coverage holes in traditional wireless sensor networks with fixed nodes, this paper proposes to introduce a small number of mobile nodes in the traditional sensor networks into heterogeneous sensor networks for target tracking. 0/1 monitoring model, a new probabilistic monitoring model is proposed and a new algorithm is proposed to track the moving targets cooperatively by scheduling the operation of mobile nodes and fixed nodes.Mobile nodes implement short-distance mobile tracking of targets and reduce the number of active ones Saving the energy consumption.In addition, the mobile node can move into the hole monitoring target to solve the problem that the traditional network can not monitor the target in the coverage hole.Experimental results based on NS2 show that the proposed tracking method can be greatly reduced The energy consumption of fixed nodes and the improvement of tracking quality have proved their effectiveness.