On collaborative tracking of a target group using binary proximity sensors

Authors:
Donglei Cao;Beihong Jin;Sajal K. Das;Jiannong Cao
Affiliations:
Institute of Software, Chinese Academy of Sciences, China;Institute of Software, Chinese Academy of Sciences, China;Department of Computer Science & Engineering, The University of Texas at Arlington, United States;Department of Computing, The Hong Kong Polytechnic University, Hong Kong
Venue:
Journal of Parallel and Distributed Computing
Year:
2010

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Abstract

In order to track multiple targets in a wireless sensor network, existing work has mostly focused on tracking the trajectories of each individual target that can be identified. However, such algorithms are often ineffective to handle a large number of targets-identifying each of them is too hard due to the fact that the targets usually move together and their locations may also be close to each other. This paper investigates the problem of tracking a group of targets when their motions are correlated. Specifically, we propose a family of algorithms for collaborative tracking with the help of binary proximity sensors. More specifically, our contributions include a fault-tolerant target group detection algorithm, two target group localization algorithms, and dynamic reporter node selection and redeployment control algorithms. Furthermore, we explore the fundamental limit on the accuracy of localizing a target group.