Abstract
Abstract This paper concentrates on secure estimation for a linear system in the presence of an unknown input and a smart jammer. A smart sensor is used to collect information and conduct a local unbiased minimum-variance estimation algorithm. Estimations of the unknown input and system states are transmitted to a remote estimator only when specific events happen for a reduction of communication cost. The smart sensor and the smart jammer can adaptively adjust their respectively transmission powers to maximize their objectives. A Stackelberg game framework is established to describe an interactive decision process between the smart sensor and the smart jammer. Based on signal-to-noise ratio of communication channel, the remote estimator is designed and convergence on estimation error covariance is given. Furthermore, an example is provided to demonstrate the feasibility of the proposed technique.
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