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arXiv · 2405.20209

Lasso-based state estimation for cyber-physical systems under sensor attacks

Vito Cerone·Sophie M. Fosson·Diego Regruto·Francesco Ripa
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Abstract

The development of algorithms for secure state estimation in vulnerable cyber-physical systems has been gaining attention in the last years. A consolidated assumption is that an adversary can tamper a relatively small number of sensors. In the literature, block-sparsity methods exploit this prior information to recover the attack locations and the state of the system. In this paper, we propose an alternative, Lasso-based approach and we analyse its effectiveness. In particular, we theoretically derive conditions that guarantee successful attack/state recovery, independently of established time sparsity patterns. Furthermore, we develop a sparse state observer, by starting from the iterative soft thresholding algorithm for Lasso, to perform online estimation. Through several numerical experiments, we compare the proposed methods to the state-of-the-art algorithms.

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Vito Cerone, Sophie M. Fosson, Diego Regruto, Francesco Ripa. 2024-05-30. Lasso-based state estimation for cyber-physical systems under sensor attacks. https://arxiv.org/abs/2405.20209

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