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Measurement outlier-Resistant target tracking in wireless sensor networks with energy harvesting constraints
Institution:1. School of Intelligent Manufacturing, Luoyang Institute of Science and Technology, Luoyang, 471023 China;2. Department of Mechanical Engineering, Politecnico di Milano, Milan, 20156 Italy;3. Henan International Joint Laboratory of Cutting Tools and Precision Machining, Luoyang Institute of Science and Technology, Luoyang, 471023 China;4. Yanfeng Automotive Trim Systems Co., Ltd, Shanghai, 200235 China;1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. the Key Laboratory of Autonomous Systems and Network Control, Ministry of Education, the College of automatic Science and Engineering, South China University of Technology, Guangzhou 510640, China
Abstract:In this paper, the measurement outlier-resistant target tracking problem is investigated in wireless sensor networks (WSNs) with energy harvesting constraints. Each WSN node can acquire energy stochastically from surroundings. No matter whether the WSN node acquires energy or not, the WSN node’s measurement can be transmitted if the energy amount of the WSN node is greater than zero. In such a case, the sensor energy-induced missing measurement (SE-IMM) phenomenon may occur. The objective of this paper is to develop a solution for the considered target tracking problem by devising the filter including a saturation constraint such that, in the simultaneous presence of outliers and the SE-IMM phenomenon, the tracking performance can meet the given performance index. Firstly, the relation between the energy level of the WSN node and its probability distribution is computed recursively. Then, an upper bound of the tracking error covariance is derived which is minimized by appropriately choosing the filter parameter. Finally, the feasibility of the proposed target tracking scheme is validated by conducting a set of comparative experiments and the relationship between the energy of the WSN node and the tracking performance is also disclosed.
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