title: Distributed Information Compression for Target Tracking in Cluster-Based Wireless Sensor Networks.
abstract: Target tracking is a critical wireless sensor application, which involves signal and information processing technologies. In conventional target position estimation methods, an estimate is usually demonstrated by an average target position. In contrast, this work proposes a distributed information compression method to describe the measurement uncertainty of tracking problems in cluster-based wireless sensor networks. The leader-based information processing scheme is applied to perform target positioning and energy conservation. A two-level hierarchical network topology is adopted for energy-efficient target tracking with information compression. A Level 1 network architecture is a cluster-based network topology for managing network operations. A Level 2 network architecture is an event-based and leader-based topology, utilizing the concept of information compression to process the estimates of sensor nodes. The simulation results show that compared to conventional schemes, the proposed data processing scheme has a balanced system performance in terms of tracking accuracy, data size for transmission and energy consumption.
authors.affiliation: Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Chung Hsing University, Taichung 402, Taiwan. cliffqoo@hotmail.com.
authors.forename: Shi-Kuan
authors.initials: SK
authors.lastname: Liao
authors.affiliation: Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Chung Hsing University, Taichung 402, Taiwan. justdoit0215@hotmail.com.
authors.forename: Kai-Jay
authors.initials: KJ
authors.lastname: Lai
authors.affiliation: Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Chung Hsing University, Taichung 402, Taiwan. hptsai@nchu.edu.tw.
authors.forename: Hsiao-Ping
authors.initials: HP
authors.lastname: Tsai
authors.affiliation: Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Chung Hsing University, Taichung 402, Taiwan. cwen@dragon.nchu.edu.tw.
authors.forename: Chih-Yu
authors.initials: CY
authors.lastname: Wen
keywords: information compression; target tracking; wireless sensor network