异构无线传感器网络中移动式目标跟踪研究进展

Research Advance of Target Tracking with Mobile Elements in Heterogeneous Wireless Sensor Networks

传统固定无线传感器网络在进行目标跟踪过程中面临跟踪质量较低、网络能耗较高等问题.引入移动节点后所组成的异构无线传感器网络提供了新的解决方法,即移动式目标跟踪.目前的研究大多对被跟踪目标的探测和定位混为一谈,本文区分了以探测为主和以定位为主的两类方法,着重介绍以探测为主的移动式目标跟踪方法的研究现状.通过对比现有方法在跟踪质量和网络能耗等方面的优缺点,揭示了现有研究存在的问题.总结了移动式目标跟踪领域存在的研究热点和趋势.

Traditional stationary wireless sensor networks usually encounter some problems during the process of target tracking, such as low tracking quality, high energy consumption and so on. More and more mobile elements, i. e. , mobile sensors, are used to build up heterogeneous wireless sensor networks and thus bring new solutionsfor target tracking. Existing researches usually misidentify detec- ting the target with locating the target. After distinguishing between detection-centric and localization-centric methods, we review spe- cifically the current research status of the detection-centric target tracking methods. By comparing existing methods＇merit and demeritin aspects like tracking quality ,energy consumption, etc., their problems are revealed. Therefore, we summarize some possible research hotspotsand tendency of mobile solutions in many aspects.