Centralized security-guaranteed filtering in multirate-sensor fusion under deception attacks |
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| Authors: | Zidong Wang Dong Wang Bo Shen Fuad E Alsaadi |
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| Institution: | 1. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China;2. Department of Computer Science, Brunel University London, Middlesex, UB8 3PH, Uxbridge, United Kingdom;3. Department of Electrical and Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia;4. School of Information Science and Technology, Donghua University, Shanghai 200051, China |
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| Abstract: | In this paper, the centralized security-guaranteed filtering problem is studied for linear time-invariant stochastic systems with multirate-sensor fusion under deception attacks. The underlying system includes a number of sensor nodes with a centralized filter, where each sensor is allowed to be sampled at different rate. A new measurement output model is proposed to characterize both the multiple rates and the deception attacks. By exploiting the lifting technique, the multi-rate sensor system is cast into a single-rate discrete-time system. With a new concept of security level, the aim of this paper is to design a filter such that the filtering error dynamics achieves the prescribed level of the security under deception attacks. By using the stochastic analysis techniques, sufficient conditions are first derived such that the filtering error system is guaranteed to have the desired security level, and then the filter gain is parameterized by using the semi-definite programme method with certain nonlinear constraints. Finally, a numerical simulation example is provided to demonstrate the feasibility of the proposed filtering scheme. |
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| Keywords: | Corresponding author |
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