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Zbl 1140.93486
Sahebsara, M.; Chen, T.; Shah, S.L.
Optimal $\mathcal H_2$ filtering with random sensor delay, multiple packet dropout and uncertain observations. (English)
[J] Int. J. Control 80, No. 2, 292-301 (2007). ISSN 0020-7179; ISSN 1366-5820/e

Summary: This paper studies the problem of optimal filtering of discrete-time systems with random sensor delay, multiple packet dropout and uncertain observation. The random sensor delay, multiple packet dropout or uncertainty in observation is transformed to a stochastic parameter in the system representation. A new formulation enables us to design an optimal filter for a system with multiple packet dropout in sensor data. Based on a stochastic definition of the $\mathcal H_{2}$-norm of a system with a stochastic parameter, new relations for a stochastic $\mathcal H_{2}$-norm are derived. The stochastic $\mathcal H_{2}$-norm of the estimation error is used as a criterion for the filter design. The relations derived for the new norm definition are used to obtain a set of linear matrix inequalities (LMIs) to solve the filter design problems. Simulation examples show the effectiveness of the proposed method.

MSC 2000:: *93E11 Filtering in stochastic control
93E15 Stochastic stability

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