Journal article

UWB/PDR Tightly Coupled Navigation with Robust Extended Kalman Filter for NLOS Environments

Xin Li, Yan Wang, Kourosh Khoshelham

MOBILE INFORMATION SYSTEMS | HINDAWI LTD | Published : 2018

Abstract

The fusion of ultra-wideband (UWB) and inertial measurement unit (IMU) is an effective solution to overcome the challenges of UWB in nonline-of-sight (NLOS) conditions and error accumulation of inertial positioning in indoor environments. However, existing systems are based on foot-mounted or body-worn IMUs, which limit the application of the system to specific practical scenarios. In this paper, we propose the fusion of UWB and pedestrian dead reckoning (PDR) using smartphone IMU, which has the potential to provide a universal solution to indoor positioning. The PDR algorithm is based on low-pass filtering of acceleration data and time thresholding to estimate the step length. According to ..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by China Postdoctoral Science Foundation


Funding Acknowledgements

This work was supported by the National Natural Science Foundation of China under grant number 41674030 and the China Postdoctoral Science Foundation under grant number 2016M601909 and a grant from the China Scholarship Council.