M.M. Kanouj1, A.V. Klokov2

1,2 NR TSU (Tomsk, Russia)

1 motayamkanouj84@stud.tsu.ru; 2 701-kav@mail.tsu.ru

The methodology of constructing a tracking system for radio navigation parameters of satellite signals in the GPS receivers is considered. Two separate tracking subsystems based on the UKF are proposed: the first subsystem is synthesized in a coherent mode and performs estimates of the signal amplitude, carrier phase and Doppler frequency; the second is a tracking subsystem for code delay. These subsystems work together and are combined to form quasi-optimal joint estimation of all the above-mentioned radio navigation parameters. A comparative analysis of the performance characteristics of the traditional tracking system and the proposed one is performed. The root mean square error of Doppler frequency estimates and the tracking probability at different signal-to-noise ratios are investigated. The advantage of the considered tracking approach over the traditional scheme is shown.

This study was supported by the Tomsk State University Development Programme (Priority-2030).

Kanouj M.M., Klokov A.V. Combined tracking system of GPS signals based on а nonlinear Kalman filter. Radiotekhnika. 2022. V. 86. № 4. P. 142−154. DOI: https://doi.org/10.18127/j00338486-202204-17 (In Russian)

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