Abstract
The chapter revisits the recent methodology of distributed robust filtering using the \(H_\infty \) filtering approach. It summarizes some recent results on the analysis and design of networks of robust filters, which cooperate to produce high-fidelity estimates for uncertain plants. These results are applied to the problem of detecting and neutralizing biasing attacks on distributed observer networks, to obtain algorithms for cooperative detection of malicious biasing behaviour of compromised network nodes.
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- 1.
I.e., \(\alpha _{1i}I\le \Sigma _i(t)\le \alpha _{2i}I\) (\(\exists \alpha _{1i},\alpha _{2i}>0\)).
- 2.
Formally, the attack model introduced in [7] is somewhat more general, it allows \(f_{i1}\) to be time varying, although it must satisfy certain additional constraints. This more general model can be used here as well, and this will not cause any technical issues. For that reason we restrict ourselves to the case where \(f_{i1}\) is a constant, to simplify the presentation.
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Acknowledgements
This chapter is dedicated to the memory of Roberto Tempo whose friendship and support will never go unappreciated. The work was supported in part by the Australian Research Council and the University of New South Wales.
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Ugrinovskii, V. (2018). Cooperative Resilient Estimation of Uncertain Systems Subjected to a Biasing Interference. In: Başar, T. (eds) Uncertainty in Complex Networked Systems. Systems & Control: Foundations & Applications. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-04630-9_2
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