摘要： 已有的基于预测和分簇的目标追踪算法通常需要较多的计算或通信开销，缩短了网络生命周期。针对上述问题，提出一种速度自适应追踪(SAT)算法，能根据被追踪目标的速度与方向，自适应地唤醒和休眠相应的节点。仿真结果表明，SAT算法能减少感应区域内至少47%的活动节点数目，降低通信和计算开销，提高网络能量利用率。

关键词: 无线传感器网络, 速度自适应追踪, 主节点

Abstract: The existing prediction-based and clustering-based target tracking algorithms are usually calculation-complicated or communication- complicated which will greatly decrease the lifetime of the network. Considering all those shortcomings, this paper proposes a Speed Adaptive Tracking(SAT) algorithm which can adaptively schedule the sensors’ activities according to the speed of targets. Simulation results show that SAT algorithm can reduce at least 47% of active sensors in the tracking area, decrease the cost of communication and calculation and improve the network energy utilization ratio.

Key words: Wireless Sensor Network(WSN), Speed Adaptive Tracking(SAT), chief node

中图分类号: 

• TP393