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Stochastic Realization Theory in Continuous Time

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Linear Stochastic Systems

Part of the book series: Series in Contemporary Mathematics ((SCMA,volume 1))

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Abstract

This chapter is devoted to continuous-time versions of the basic results in Chaps.ā€‰6, 8 and 9 In this context, the linear stochastic model (6.1) corresponds to a system

$$\displaystyle{ \left \{\begin{array}{@{}l@{\quad }l@{}} dx = Axdt + Bdw\quad \\ dy = Cxdt + Ddw\quad \end{array} \right. }$$

of stochastic differential equations driven by the increments of a vector Wiener process w. The state process x will still be a stationary process, but the output process y has stationary increments. In the case when Dā€‰=ā€‰0, we may instead consider a model

$$\displaystyle{ \left \{\begin{array}{@{}l@{\quad }l@{}} dx = Axdt + Bdw\quad \\ \phantom{d}y = Cx\quad \end{array} \right. }$$

for which the output is a stationary process.

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Lindquist, A., Picci, G. (2015). Stochastic Realization Theory in Continuous Time. In: Linear Stochastic Systems. Series in Contemporary Mathematics, vol 1. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-45750-4_10

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