Low-Complexity Tracking Technique for BDS-3 Wideband Multiplexed Signals

Yunhan Qi, Zheng Yao, and Mingquan Lu

Abstract: To provide various and reliable Positioning, Navigation and Timing (PNT) services for global users, the third-generation BeiDou Navigation Satellite System (BDS-3), which has been officially put into operation in 2020, broadcasts multiple signals on multiple frequencies. Compared with traditional signals, BDS-3 Wideband Multiplexed Signals (WMS), composed of two signals located on adjacent frequencies, have more components and complex-value subcarriers with higher frequencies, thus having potential for higher-precision ranging and positioning. However, since BDS-3 WMSs have much wider bandwidths than traditional signals, their tracking methods require higher sampling rates, resulting in tremendous computation burdens, especially for consumer electronics. Therefore, to effectively reduce BDS-3 WMS tracking calculations, this paper specifically designs a low-complexity tracking structure composed of a frequency-conversion module and a two-stage tracking module. Experiment results show that the proposed method can effectively reduce calculations in BDS-3 WMS tracking with slight tracking performance losses, providing a low-complexity solution for BDS-3 WMS tracking.
Published in: Proceedings of the ION 2024 Pacific PNT Meeting
April 15 - 18, 2024
Hilton Waikiki Beach
Honolulu, Hawaii
Pages: 218 - 227
Cite this article: Qi, Yunhan, Yao, Zheng, Lu, Mingquan, "Low-Complexity Tracking Technique for BDS-3 Wideband Multiplexed Signals," Proceedings of the ION 2024 Pacific PNT Meeting, Honolulu, Hawaii, April 2024, pp. 218-227. https://doi.org/10.33012/2024.19653
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