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Robust GPS Carrier Tracking Model using Unscented Kalman Filter for a Dynamic Vehicular Communication Channel

Lookup NU author(s): Jiachen Yin, Dr Rajesh Tiwari, Dr Martin JohnstonORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


The carrier tracking loop in a GPS receiver is considered to be an important process but also a weak link since loss of signal lock can occur in a variety of situations. Low carrier-to-noise ratios (CNR) and highly dynamic environments are common scenarios for a vehicular communication channel when random phase fluctuations in a dynamic environment are common. We propose a novel and robust carrier tracking approach by dynamically integrating an adaptive unscented Kalman filter assisted by a third-order phase lock loop in order to improve the robustness of tracking capability and accuracy in dense and dynamic environments. Experiments are conducted to investigate the tracking performance of the proposed carrier tracking approach and compare it with existing algorithms for generic GPS receiver. Results indicate that the proposed approach has a better performance in tracking capability and tracking accuracy in highly dynamic environments, and the proposed method achieves a better performance on vehicular communication channels.

Publication metadata

Author(s): Yin J, Tiwari R, Johnston M

Publication type: Article

Publication status: Published

Journal: IEEE Access

Year: 2018

Volume: 6

Pages: 26930-26938

Online publication date: 08/05/2018

Acceptance date: 02/04/2018

Date deposited: 31/05/2018

ISSN (electronic): 2169-3536

Publisher: IEEE


DOI: 10.1109/ACCESS.2018.2834470


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