一种新的面向目标跟踪的传感器节点调度策略

A Novel Node Scheduling Scheme for Target Tracking Sensor Networks

在用于目标跟踪的无线传感器网络中,传感器节点的电池能量有限,跟踪质量和网络生命周期是两个冲突的优化目标。在目标的移动过程中,如何选择合适的传感器节点子集,在指定时刻被唤醒,是延长网络生命周期和保证跟踪质量的关键。一种能量高效的传感器节点调度机制被提出,该机制综合考虑跟踪质量和网络生命周期,根据目标可能的运动区域选择需要启动的传感器节点子集。仿真试验结果证明该调度策略是高效的和节能的。

In target tracking sensor networks, tracking quality and network lifetime are two conflicting optimization goals due to the limited battery power of the sensor nodes. During the movement of a target, how to select a suitable subset of sensors to wake up is of critical importance both for extending network lifetime and guaranteeing tracking quality. In this paper, an energy -efficient sensor scheduling scheme is proposed, in order to balancing tracking quality and network lifetime. The correctness of our tracking algorithm and the effectiveness of the proposed scheduling scheme are validated through theoretical proofs and extensive simulation experiments.