Recursive state estimation in relay channels with enhanced security against eavesdropping: An innovative encryption–decryption framework

IF 4.8 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

Automatica Pub Date : 2025-01-31 DOI:10.1016/j.automatica.2025.112159

Lei Zou , Zidong Wang , Bo Shen , Hongli Dong

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引用次数: 0

Abstract

In this paper, the problem of secure recursive state estimation is addressed for a networked linear system over a relay channel. We consider the scenario where the transmitted signals and the internal state of the relay node might be intercepted by potential eavesdroppers. To prevent the system states from being inferred by potential eavesdroppers via overheard measurement signals, an encryption–decryption mechanism is adopted to protect the transmitted measurement signals over the communication links. Furthermore, for the purpose of preserving data privacy during the relaying process, a decryption-free relaying protocol is constructed, where a matrix-inequality-based method is proposed for the design of the desired parameters for the relaying protocol. Following this, a recursive state estimator is developed to generate state estimates through a set of recursions. Sufficient conditions are then derived to ensure the ultimate boundedness of the resultant estimation error variance matrix. Finally, the effectiveness of the proposed secure recursive state estimation scheme is demonstrated through a simulation example.

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来源期刊

Automatica 工程技术-工程：电子与电气

CiteScore

10.70

自引率

7.80%

发文量

617

审稿时长

5 months

期刊介绍： Automatica is a leading archival publication in the field of systems and control. The field encompasses today a broad set of areas and topics, and is thriving not only within itself but also in terms of its impact on other fields, such as communications, computers, biology, energy and economics. Since its inception in 1963, Automatica has kept abreast with the evolution of the field over the years, and has emerged as a leading publication driving the trends in the field. After being founded in 1963, Automatica became a journal of the International Federation of Automatic Control (IFAC) in 1969. It features a characteristic blend of theoretical and applied papers of archival, lasting value, reporting cutting edge research results by authors across the globe. It features articles in distinct categories, including regular, brief and survey papers, technical communiqués, correspondence items, as well as reviews on published books of interest to the readership. It occasionally publishes special issues on emerging new topics or established mature topics of interest to a broad audience. Automatica solicits original high-quality contributions in all the categories listed above, and in all areas of systems and control interpreted in a broad sense and evolving constantly. They may be submitted directly to a subject editor or to the Editor-in-Chief if not sure about the subject area. Editorial procedures in place assure careful, fair, and prompt handling of all submitted articles. Accepted papers appear in the journal in the shortest time feasible given production time constraints.