GEONAV IoT - Study of Hybrid 5G / GNSS Positioning

Fabius, Margaux; Lapeyre, Didier; Messager, Fabien; Kiely, Ian; Arzel, Laurent; Pomies, Axelle

doi:10.33012/2021.17914

Proceedings of the 34th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 202 2021

DOI: 10.33012/2021.17914

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GEONAV IoT - Study of Hybrid 5G / GNSS Positioning

Margaux Fabius¹,

Didier Lapeyre²,

Fabien Messager³

et al.

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A Fast Acquisition Algorithm for Hybrid Signals of 5G and BeiDou B1

et al. 2023

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With the large-scale use of BeiDou navigation and 5G technology worldwide, integrating BeiDou navigation and communication has become a hot research topic in navigation and positioning technology. Low-cost, miniaturized, and susceptible mixed-signal receivers will become the future receiver technology development trend. However, the current receiver technology still faces the challenge of further improving the positioning service capability and communication quality, which includes the lack of practical analysis of the compatibility between signals and the lack of mixed-signal processing capability of the receiver baseband key technology. To address these problems, we start by analyzing the signal part of 5G out-of-band signals falling into the BD B1 signal band, conduct a detailed analysis of the mixed signal regime and frequency planning, and design a hybrid receiver architecture compatible with both signals, and propose an SC-PMF-FFT fast capture algorithm based on strong correlation, which takes advantage of the strong correlation of signals broadcast on the BD B1 frequency point from B1I to B1C, and reuses the structure of the CDMA system signal capture algorithm to complete the fast capture of 5G signals using an OFDM system. The experiments show that the method can capture the BeiDou B1 signal with a sensitivity of −154 dBm and a whole constellation capture time of no more than 40 ms with the inlet power of the 5G signal not exceeding −45 dBw.

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A Fast Acquisition Algorithm for Hybrid Signals of 5G and BeiDou B1

et al. 2023

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GEONAV IoT - Study of Hybrid 5G / GNSS Positioning

Cited by 1 publication

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A Fast Acquisition Algorithm for Hybrid Signals of 5G and BeiDou B1

A Fast Acquisition Algorithm for Hybrid Signals of 5G and BeiDou B1

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