Abstract
In this paper, a novel robust Student’s t-based Kalman filter (RSTKF) is proposed to solve the problem of a linear system with heavy-tailed process and measurement noises (HPMN) and colored measurement noise (CMN). The above problem is transformed into the filtering problem of a linear system with HPMN and white measurement noise after using the measurement differencing method and state augmentation approach. The augmentation state vector, the scale matrix and the auxiliary random variables are jointly estimated based on the variational Bayesian approach. Simulation results are provided to demonstrate the superiority of the proposed RSTKF by comparing with the existing filtering algorithms for systems with HPMN and CMN.
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