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Distributed Sparse Undetectable Attacks Against State Estimation

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This article studies a class of distributed attack strategies against state estimation of wireless sensor networks. The attack objective is to corrupt the least numbers of sensors so that the… Click to show full abstract

This article studies a class of distributed attack strategies against state estimation of wireless sensor networks. The attack objective is to corrupt the least numbers of sensors so that the state estimate error approaches a target bias while avoiding being detected and high attacking is lost. First, with precise knowledge of the measurement model and applying a sparsity projection operation with average linear complexity rather than the popular brute force search and approximation techniques, a distributed optimization scheme is proposed which provides an exact and low-complexity algorithmic solution to finding the optimal attack strategy. Furthermore, by introducing “dead-zone” type projection and region projection operators, a distributed optimization algorithm for robust sparse undetectable attacks is proposed with imprecise model knowledge. A distinguishing point of the proposed algorithms is that a tradeoff between computational complexity and an attack’s impact can be achieved by properly designing a cost function. Simulation results on an unmanned ground vehicle are presented to substantiate the algorithm.

Keywords: undetectable attacks; state; sparse undetectable; state estimation; distributed sparse

Journal Title: IEEE Transactions on Control of Network Systems
Year Published: 2022

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