eLoran: Resilient Positioning, Navigation, and Timing Infrastructure in Maritime Areas
| Autor: | Sul Gee Park, Younghoon Han, Ki-Yeol Seo, Pyo-Woong Son |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
eLoran testbed
020301 aerospace & aeronautics General Computer Science business.industry Computer science Transmitter Real-time computing General Engineering 020206 networking & telecommunications Jamming Satellite system 02 engineering and technology Radio navigation GNSS backup resilient PNT 0203 mechanical engineering GNSS applications 0202 electrical engineering electronic engineering information engineering Global Positioning System maritime navigation General Materials Science lcsh:Electrical engineering. Electronics. Nuclear engineering business lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 8, Pp 193708-193716 (2020) |
| ISSN: | 2169-3536 |
| DOI: | 10.1109/access.2020.3033215 |
| Popis: | Global navigation satellite system (GNSS) and localization technology have become highly compact and effective. Although GNSS has been proven to be vulnerable to jamming when the signal strength is weak, most vehicles rely on it for navigation. Compared to GNSS, enhanced Loran (eLoran) is more resistant to jamming and is recommended as a realistic alternative to GNSS. Therefore, South Korea embarked on an eLoran testbed development project to provide resilient navigation information for maritime users. The primary goal of this project was to demonstrate that the system can provide a 20-m position accuracy to the maritime user within a 30-km coverage of a differential Loran station. In this paper, we describe the development of the eLoran testbed implementation and the performance of its preliminary experimental results. To confirm the feasibility of the eLoran testbed performance, we installed an eLoran transmitter and two differential Loran stations and subsequently conducted a zero-baseline performance test at the Pyeongtaek differential Loran station with a new eLoran signal. We also conducted a survey to collect conventional Loran signals along the western and southern coastlines of South Korea. Our experimental results show that the eLoran system met the performance requirements of this project, as well as that the signal to noise ratio of the eLoran signals changed over the topographic characteristics of the propagation path. |
| Databáze: | OpenAIRE |
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