Ultra Wideband Indoor Positioning Using Kalman Filters

Abstract:

A time-difference-of-arrival (TDOA) positioning technique for indoor ultra wideband (UWB) systems is presented. Non-line-of-sight (NLOS) propagation error is a major source of error in positioning systems. Therefore an NLOS mitigation technique employing a Kalman filter is utilized to reduce the NLOS errors in indoor UWB environments. An extended Kalman filter (EKF) is used to process the TDOA data for mobile positioning and tracking. Performance results are presented which show that the proposed scheme can significantly improve the positioning accuracy in a UWB environment.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 4207-4213
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.4207
• Online since: January 2012
• Authors: Li Zhang, Hao Zhang, Xue Rong Cui, T Aaron Gulliver
• Keywords: Indoor Positioning, Kalman Filter (KF), NLOS Error, TDOA, UWB

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