传感技术学报
傳感技術學報
전감기술학보
Chinese Journal of Sensors and Actuators
2015年
11期
1708-1715
,共8页
李辉%刘云%王传旭%崔雪红%张俊虎
李輝%劉雲%王傳旭%崔雪紅%張俊虎
리휘%류운%왕전욱%최설홍%장준호
目标跟踪%无线传感器网络%粒子滤波%跟踪精度
目標跟蹤%無線傳感器網絡%粒子濾波%跟蹤精度
목표근종%무선전감기망락%입자려파%근종정도
object tracking%wireless sensor network%particle filter%tracking accuracy
目标跟踪是无线传感器网络研究的关键技术之一,如何在保证较低能量消耗的前提下,实现监测场景中运动目标准确跟踪是需要解决的问题。在深入研究分析传感器网络目标跟踪算法的基础上,提出了基于约束策略的WSN低能耗粒子滤波跟踪算法。该算法采用动态分簇,既减少网络的能量消耗,又保证监测目标节点的数量;在跟踪过程中,采用约束策略得出目标估计区域,对粒子采样结果进行优化,同时对状态空间模型进行改进,增强粒子对目标的跟踪能力。仿真结果表明,提出的跟踪算法有效的实现目标的跟踪,在保证低能耗的同时提高了跟踪精度。
目標跟蹤是無線傳感器網絡研究的關鍵技術之一,如何在保證較低能量消耗的前提下,實現鑑測場景中運動目標準確跟蹤是需要解決的問題。在深入研究分析傳感器網絡目標跟蹤算法的基礎上,提齣瞭基于約束策略的WSN低能耗粒子濾波跟蹤算法。該算法採用動態分簇,既減少網絡的能量消耗,又保證鑑測目標節點的數量;在跟蹤過程中,採用約束策略得齣目標估計區域,對粒子採樣結果進行優化,同時對狀態空間模型進行改進,增彊粒子對目標的跟蹤能力。倣真結果錶明,提齣的跟蹤算法有效的實現目標的跟蹤,在保證低能耗的同時提高瞭跟蹤精度。
목표근종시무선전감기망락연구적관건기술지일,여하재보증교저능량소모적전제하,실현감측장경중운동목표준학근종시수요해결적문제。재심입연구분석전감기망락목표근종산법적기출상,제출료기우약속책략적WSN저능모입자려파근종산법。해산법채용동태분족,기감소망락적능량소모,우보증감측목표절점적수량;재근종과정중,채용약속책략득출목표고계구역,대입자채양결과진행우화,동시대상태공간모형진행개진,증강입자대목표적근종능력。방진결과표명,제출적근종산법유효적실현목표적근종,재보증저능모적동시제고료근종정도。
Object tracking is one of the key techniques in wireless sensor network.How to ensure low energy con?sumption on the premise of achieving accurate tracking of moving objects in the monitoring scene is a problem to be solved. We propose particle filter tracking algorithm of low energy consumption for wireless sensor network based on restrict strategy on the basis of in-depth research and analysis of sensor network. The algorithm uses dynamic clustering,which reduces the energy consumption of the network as well as ensuring the number of monitoring tar?get nodes. In the tracking process,restrict strategy is used to get estimation region and optimize particle sampling re?sult,meanwhile improves the state-space model and enhances the particle’s tracking capability of objects. Simula?tion results show that the proposed tracking algorithm effectively achieves object tracking ,ensures low energy con?sumption and improves tracking accuracy.