基于动态能量管理的无线传感网络动目标定位跟踪方法  

DPM-based method for tracking maneuvering targets in wireless sensor networks

作　　者：林金朝[1,2] 李国军[3,2] 周晓娜[3] 周道军[3] 蒋勇[3] 

机构地区：[1]重庆邮电大学检测电路与信息传输系统研究中心,重庆400065 [2]重庆大学通信与测控技术研究所,重庆400044 [3]重庆通信学院通信指挥系,重庆400035

出　　处：《通信学报》2010年第12期90-96,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60971016);重庆市科委科技攻关基金资助项目(CSTC,2008AB2023);中央高校基本科研业务基金资助项目(CDJXS10161113)~~

摘　　要：针对无线传感网络目标跟踪的能效性问题,结合网络能耗模型与唤醒机制,提出一种新的基于动态能量管理的分布式动目标定位跟踪方法。根据目标运动的先验信息,通过小波消噪和自回归预测,实现无线传感节点的动态唤醒,延长休眠时间,降低能量消耗。簇内相关节点构成分布式动态定位跟踪单元,簇头负责收集跟踪单元的测量信息,采用一种基于两圆位置关系的定位修正算法,简化了目标跟踪定位过程。仿真结果表明,基于动态能量管理的分布式定位跟踪方法能降低节点能耗,满足定位跟踪精度,适用于地面动目标的定位跟踪。Focused on energy efficiency issues under tracking targets within WSN,a new dynamic power management（DPM） method for tracking distributed targets was proposed combining with the network energy consumption model and wake-up mechanism.With precedent location information of maneuvering target,the algorithm involved both cancelling noise by wavelet filter and predicting target state by autoregressive transformation is introduced to awaken wireless sensor nodes so that their sleep time is prolonged and energy consumption is reduced.According to the current location of maneuvering target,related nodes in an appointed cluster of WSN constitute a distributed dynamic tracking unit,and the cluster head is responsible for collecting the measurement information from the nodes in the tracking unit.A locating algorithm based on the relative posi-tion of two circulars formed on the bases of measurement information is adopted to simplify the process of locatiny and tracking target.Simulation results show that the DPM-based method can reduce the nodes＇ energy consumption,meet the locating and tracking accuracy,and can be applied to locate and track the maneuvering targets on the earth surface.

关 键 词：无线传感器网络 动目标 定位与跟踪 动态能量管理 

分 类 号：TN953[电子电信—信号与信息处理]