A Modified EKF Algorithm for GPS Point Dynamic Positioning and Velocity Measurement

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Provided by: Journal of Theoretical and Applied Information Technology
Topic: Mobility
Format: PDF
Extended Kalman Filter (EKF) algorithm is widely used in GPS positioning and velocity measurement. As for EKF algorithm, the approximate initial position of the receiver is indispensable; otherwise the time consumption of the first positioning is too high because of the filter's low convergence rate. A modified EKF algorithm named Delayed Update EKF (DU-EKF) algorithm for GPS point dynamic positioning and velocity measurement is proposed in this paper, which can speed up the convergence rate of the filter without the receiver's approximate initial position.
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