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Doppler Shift Based Low Earth Orbit Satellite Terminal Positioning Technology

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Název: Doppler Shift Based Low Earth Orbit Satellite Terminal Positioning Technology
Autoři: WEI Fan, WANG Jikang, ZHAO Yuyan, LIAO Yucheng
Zdroj: 天地一体化信息网络, Vol 6, Pp 38-46 (2025)
Informace o vydavateli: Post&Telecom Press Co.,LTD, 2025.
Rok vydání: 2025
Sbírka: LCC:Information technology
Témata: LEO satellite network, integration of communication and navigation, Doppler shift based positioning, Information technology, T58.5-58.64
Popis: The integration of communication, navigation and remote sensing is the evolutinary direction for future low earth orbit (LEO) satellite Internet to achieve ubiquitous integrated space-based information service. To expand the utilities of existing communication constellations, a multi-satellite joint positioning scheme has been designed, which utilizes the Doppler shift carried by communication signals to obtain the geographical location information for target terminals. Furthermore, a practical Doppler shift estimation algorithm has been proposed, which can address the issue of LEO satellite Doppler shift exceeding the subcarrier spacing of OFDM system. Finally, through link-level simulation, the positioning performance of the proposed scheme for target terminal has been validated.
Druh dokumentu: article
Popis souboru: electronic resource
Jazyk: Chinese
ISSN: 2096-8930
Relation: https://doaj.org/toc/2096-8930
DOI: 10.11959/j.issn.1000-0801.2025016
Přístupová URL adresa: https://doaj.org/article/d4da2fb35cbc43a4b29e1f5767d2a7d6
Přístupové číslo: edsdoj.4da2fb35cbc43a4b29e1f5767d2a7d6
Databáze: Directory of Open Access Journals
Popis
Abstrakt:The integration of communication, navigation and remote sensing is the evolutinary direction for future low earth orbit (LEO) satellite Internet to achieve ubiquitous integrated space-based information service. To expand the utilities of existing communication constellations, a multi-satellite joint positioning scheme has been designed, which utilizes the Doppler shift carried by communication signals to obtain the geographical location information for target terminals. Furthermore, a practical Doppler shift estimation algorithm has been proposed, which can address the issue of LEO satellite Doppler shift exceeding the subcarrier spacing of OFDM system. Finally, through link-level simulation, the positioning performance of the proposed scheme for target terminal has been validated.
ISSN:20968930
DOI:10.11959/j.issn.1000-0801.2025016