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Energy-Efficient Target Tracking by Mobile Sensors With Limited Sensing Range | IEEE Journals & Magazine | IEEE Xplore

Energy-Efficient Target Tracking by Mobile Sensors With Limited Sensing Range


Abstract:

The recent advancements of technology in robotics and wireless communication have enabled the low-cost and large-scale deployment of mobile sensor nodes for target tracki...Show More

Abstract:

The recent advancements of technology in robotics and wireless communication have enabled the low-cost and large-scale deployment of mobile sensor nodes for target tracking, which is a critical application scenario of wireless sensor networks. Due to the constraints of limited sensing range, it is of great importance to design node coordination mechanism for reliable tracking so that at least the target can always be detected with a high probability, while the total network energy cost can be reduced for longer network lifetime. In this paper, we deal with this problem considering both the unreliable wireless channel and the network energy constraint. We transfer the original problem into a dynamic coverage problem and decompose it into two subproblems. By exploiting the online estimate of target location, we first decide the locations where the mobile nodes should move into so that the reliable tracking can be guaranteed. Then, we assign different nodes to each location in order that the total energy cost in terms of moving distance can be minimized. Extensive simulations under various system settings are employed to evaluate the effectiveness of our solution.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 63, Issue: 11, November 2016)
Page(s): 6949 - 6961
Date of Publication: 23 June 2016

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I. Introduction

In recent years, the advancements in robotics and effective wireless communication have provided us with the opportunity to deploy the mobile sensor networks (MSN) for various applications [1]–[4], such as environment monitoring[5] and power management [6]. These networks are composed of a large amount of mobile devices, which have computation, communication, and sensing abilities. Compared with static sensor networks, for target tracking which is a critical problem in the field of MSN, mobile sensors are expected to provide equivalent or even better tracking performance with more flexibility at lower cost[7].

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