Secure Fusion Estimation for Bandwidth Constrained Cyber-Physical Systems Under Replay Attacks

State estimation plays an essential role in the monitoring and supervision of cyber-physical systems (CPSs), and its importance has made the security and estimation performance a major concern. In this case, multisensor information fusion estimation (MIFE) provides an attractive alternative to study...

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Bibliographic Details
Published in:IEEE transactions on cybernetics 2018-06, Vol.48 (6), p.1862-1876
Main Authors: Chen, Bo, Ho, Daniel W. C., Hu, Guoqiang, Yu, Li
Format: Article
Language:English
Subjects:
Bandwidth
Bandwidth constraints
Bandwidths
Compensation
Cyber-physical systems
cyber-physical systems (CPSs)
Cybersecurity
Data compression
Data integration
fusion estimation
Kalman filtering
Kalman filters
Multisensor fusion
replay attacks
Robustness
Robustness (mathematics)
security performance analysis
State estimation
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Summary:State estimation plays an essential role in the monitoring and supervision of cyber-physical systems (CPSs), and its importance has made the security and estimation performance a major concern. In this case, multisensor information fusion estimation (MIFE) provides an attractive alternative to study secure estimation problems because MIFE can potentially improve estimation accuracy and enhance reliability and robustness against attacks. From the perspective of the defender, the secure distributed Kalman fusion estimation problem is investigated in this paper for a class of CPSs under replay attacks, where each local estimate obtained by the sink node is transmitted to a remote fusion center through bandwidth constrained communication channels. A new mathematical model with compensation strategy is proposed to characterize the replay attacks and bandwidth constrains, and then a recursive distributed Kalman fusion estimator (DKFE) is designed in the linear minimum variance sense. According to different communication frameworks, two classes of data compression and compensation algorithms are developed such that the DKFEs can achieve the desired performance. Several attack-dependent and bandwidth-dependent conditions are derived such that the DKFEs are secure under replay attacks. An illustrative example is given to demonstrate the effectiveness of the proposed methods.
ISSN:2168-2267
2168-2275
DOI:10.1109/TCYB.2017.2716115