Kalman Filtering for Discrete Stochastic Systems with Multiplicative Noises and Random Two-Step Sensor Delays

• Published in: Discrete Dynamics in Nature and Society Vol. 2015; no. 2015; pp. 824 - 834-289
• Main Authors: Liu, Xiaohui, Xu, Long, Yu, Yonglong, Chen, Dongyan
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Limiteds 01.01.2015; Hindawi Publishing Corporation; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Algorithms; Control theory; Data transmission; Delay; Discrete-time systems; Economic models; Filtering; Kalman filtering; Kalman filters; Mathematical research; Mean square errors; Microelectromechanical systems; Noise; Optimization; Random variables; Sensors; Stochastic processes; Stochastic systems
• ISSN: 1026-0226; 1607-887X
• DOI: 10.1155/2015/809734

This paper is concerned with the optimal Kalman filtering problem for a class of discrete stochastic systems with multiplicative noises and random two-step sensor delays. Three Bernoulli distributed random variables with known conditional probabilities are introduced to characterize the phenomena of the random two-step sensor delays which may happen during the data transmission. By using the state augmentation approach and innovation analysis technique, an optimal Kalman filter is constructed for the augmented system in the sense of the minimum mean square error (MMSE). Subsequently, the optimal Kalman filtering is derived for corresponding augmented system in initial instants. Finally, a simulation example is provided to demonstrate the feasibility and effectiveness of the proposed filtering method.