Santong Zhang

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The sequential filtering of discrete time nonlinear systems in the presence of unknown noise statistical parameters or time varying noise parameters is studied in this paper. The Sage-Husa statistics estimator is introduced to unscented Kalman filter (UKF), then the online estimation of unknown covariance of noise is completed with recursive operations, a(More)
In order to improve the positioning precision and reliability in dead reckoning(DR)/Global Positioning System(GPS), a novel fusion method is proposed on the basis of using Bootstrap filtering in Dead reckoning and Kalman filter in DR/GPS system. The affection of the position errors accumulation is decreased, because only the velocity and acceleration(More)
In this paper, a new particle filter algorithm - unscented particle filter (UPF) is given based on the analysis of extended Kalman filter (EKF), general particle filter (PF) and unscented Kalman filter (UKF), and then it is applied to GPS/DR integrated navigation system. Finally, the feasibility and accuracy of UPF algorithm are proved, with a simulation(More)
In this paper, unscented particle filtering (UPF) is applied to multiuser detection (MUD) in synchronous code division multiple access (CDMA) environments. The UPF algorithm consists of a particle filtering (PF) that uses an unscented Kalman filtering (UKF) to generate the importance proposal distributions, which match the true posterior better. The(More)
Due to the configuration complexity of the diesel locomotive air brake system, it is difficult to realize the fault diagnosis on the brake system. In order to enhance fault diagnosis efficiency for diesel locomotive air brake system with uncertain fault, a fault diagnosis model based on Bayesian network is proposed in this paper. According to a priori exact(More)
A new fault diagnosis method based on integrated fuzzy logic and particle filter for nonlinear systems is proposed to improve the accuracy of fault diagnosis. The Water Level and Temperature Control System is taken as test-bed process, with different switching states simulating possible system faults. The simulation result show that the proposed method(More)
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