文献类型：会议论文

英文题名：Security Analysis of Replay Attacks on Partial Channels in Centralized Remote Estimation Systems

作者：Huang, Jiahao[1];Sun, Qiyu[2];Xu, Jing[2];Tang, Yang[2]

机构：[1]Zhejiang Univ Sci & Technol, Sch Automat & Elect Engn, Hangzhou 310023, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Ind Control Technol, Shanghai 200237, Peoples R China

会议论文集：6th International Conference on Control and Fault-Tolerant Systems-SYSTOL-Biannual

会议日期：OCT 06-08, 2025

会议地点：Ayia Napa, CYPRUS

语种：英文

摘要：This work studies the security of multi-sensor centralized remote estimation under replay attacks launched on partial wireless channels. We consider an adversary with limited attack resources and only partial knowledge of the system dynamics, who aims to compromise sensor measurements by replaying previously observed data. To evaluate both the stealthiness of the attack and its impact on estimation performance, we adopt two key metrics: the Kullback-Leibler (K-L) and the estimation error covariance. Our analysis reveals that the system's resilience to such attacks fundamentally depends on the stability of the state matrix. Specifically, when the system is stable, both the K-L divergence and the estimation error covariance converge to steady-state values characterized by two coupled Lyapunov equations. In contrast, if the state matrix is unstable, these metrics grow unbounded over time under replay attacks. Finally, a simulation example is provided to validate the theoretical results and demonstrate the practical implications of partial-channel replay attacks in remote estimation systems.