Integrated positioning with double-differenced 5G and undifferenced/double-differenced GPS

Li, Fangxin; Tu, Rui; Zeng, Lingchuan; Zhang, Shixuan; Liu, Mingyue; Lu, Xiaochun

doi:10.1016/j.measurement.2023.113114

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…The error of 5G centimeter wave in ranging and positioning is mainly due to the fact that the time between the base station and the receiving terminal is not synchronized, because a small synchronization error will cause a large error in TOA ranging [26]. In order to eliminate the clock offset of 5G receiver and the clock offset between 5G base stations in the observation equation, a double difference observation model is constructed by introducing 5G reference station [16].…”

Section: G Double Difference Observation Modelmentioning

confidence: 99%

GPS + 5G fusion for high-precision time transfer

Liu,

Tu,

et al. 2024

Meas. Sci. Technol.

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With the continuous development and increasing popularity of the fifth generation (5G) of mobile communications technology, its fusion with the Global Navigation Satellite System (GNSS) data can effectively improve problems with service interruptions or poor satellite signal reception. In this study, GPS and 5G data were fused, and the resulting experimental algorithm showed that it effective improves time transfer’s frequency stability and reliability. Moreover, this technique reduced the noise level of time-transmitted clock offset sequences, while suppressing short-term mutations. By simulating different degrees of satellite signal occlusion, it was further verified that the GPS+5G fusion method can provide stable, high-precision, and real-time delivery services under insufficient satellite signal reception. This provides a reference for high-precision time transfer technology in complex environments and further improves the reliability of GNSS high-precision time transfer.

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Section: G Double Difference Observation Modelmentioning

confidence: 99%