RT Journal Article SR 00 ID 10.1080/17442508808833485 A1 Kurzhanski, A. T1 On stochastic filtering approximations of estimation problems for systems with uncertainty∗ JF Stochastics YR 1988 FD 1988 VO 23 IS 2 SP 109 OP 130 K1 State estimation, multistage linear system, geometric constraints, convex analysis, Kalman filter AB This paper considers estimating the state of a discrete-time linear system in which the values of an unobserved disturbance process are only known to lie in certain prescribed sets. By introducing additional stochastic disturbances it is shown that this problem can be approximated to arbitrarily high accuracy by the solution of a Kalman filtering problem PB Taylor and Francis SN 0090-9491 LK https://pure.iiasa.ac.at/id/eprint/14150/