An approach to the design of economical high-speed observers of adaptive au
tomatic control systems on the basis of the concept of hybrid (digital-to-a
nalog) tunable circuits is proposed. In the framework of the known techniqu
e of synthesis of ARC circuits having an extended frequency and dynamic ran
ge, the generalized structure of the Kalman-Bucy filter is investigated and
characteristic features of the synthesis of basic circuits are formulated.
An example of a cyclic second-order Kalman-Bucy filter is given.