Archivio Istituzionale della RicercaFor the increasingly strong demand for low-orbit navigation enhancement, a novel navigation and communication integrated (NAVCOM) waveform for the LEO constellation is proposed, which can conduct communication and navigation simultaneously. Zadoff-Chu (ZC) sequence with controllable power is superimposed on the communication signal in the frequency domain as the positioning signal. Furthermore, positioning can be conducted with both time-domain correlation detection (TDCD) and frequency-domain phase estimation (FDPE) for higher ranging accuracy benefits from the Fourier invariance of ZC sequence. Interference between positioning and communication components is analyzed, and the Cramer-Rao low bound (CRLB) of ranging error is given. The performance evaluations show that the novel waveform can achieve high-precision positioning without signifilcantly affecting communication performance.
A Novel Navigation-Communication Integrated Waveform for LEO Network / Wang, M.; Liu, G.; Ruofei, M.; Zhao, W.; Kang, W.. - (2022), pp. 747-752. (Intervento presentato al convegno 2022 IEEE Global Communications Conference, GLOBECOM 2022 tenutosi a Rio de Janeiro (Bra) nel 4-8 December 2022) [10.1109/GLOBECOM48099.2022.10000629].
A Novel Navigation-Communication Integrated Waveform for LEO Network
Wang M.;Liu G.;
2022
Abstract
For the increasingly strong demand for low-orbit navigation enhancement, a novel navigation and communication integrated (NAVCOM) waveform for the LEO constellation is proposed, which can conduct communication and navigation simultaneously. Zadoff-Chu (ZC) sequence with controllable power is superimposed on the communication signal in the frequency domain as the positioning signal. Furthermore, positioning can be conducted with both time-domain correlation detection (TDCD) and frequency-domain phase estimation (FDPE) for higher ranging accuracy benefits from the Fourier invariance of ZC sequence. Interference between positioning and communication components is analyzed, and the Cramer-Rao low bound (CRLB) of ranging error is given. The performance evaluations show that the novel waveform can achieve high-precision positioning without signifilcantly affecting communication performance.
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https://hdl.handle.net/11583/2999154
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