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Unscented extended Kalman filter for target tracking

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3 Author(s)
Liu, Changyun ; National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, P. R. China; Missile College of Air Force Engineering University, Sanyuan 713800, P. R. China ; Shui, Penglang ; Li, Song

A new method of unscented extended Kalman filter (UEKF) for nonlinear system is presented. This new method is a combination of the unscented transformation and the extended Kalman filter (EKF). The extended Kalman filter is similar to that in a conventional EKF. However, in every running step of the EKF the unscented transformation is running, the deterministic sample is caught by unscented transformation, then posterior mean of nonlinearity is caught by propagating, but the posterior covariance of nonlinearity is caught by linearizing. The accuracy of new method is a little better than that of the unscented Kalman filter (UKF), however, the computational time of the UEKF is much less than that of the UKF.

Published in:

Systems Engineering and Electronics, Journal of  (Volume:22 ,  Issue: 2 )