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2023 Journal Impact Factor - 0.7
2023 CiteScore - 1.4
ISSN 2083-6473
ISSN 2083-6481 (electronic version)
Editor-in-Chief
Associate Editor
Prof. Tomasz Neumann
Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
e-mail transnav@umg.edu.pl
Assessing the Limits of eLoran Positioning Accuracy
1 Czech Technical University in Prague, Prague, Czech Republic
2 The General Lighthouse Authorities of the United Kingdom and Ireland
2 The General Lighthouse Authorities of the United Kingdom and Ireland
ABSTRACT: Enhanced Loran (eLoran) is the latest in the longstanding and proven series of low frequency, LOng-RAnge Navigation systems. eLoran evolved from Loran-C in response to the 2001 Volpe Report on GPS vulnerability. The next generation of the Loran systems, eLoran, improves upon Loran-C through enhancements in equipment, transmitted signal, and operating procedures. The improvements allow eLoran to provide better performance and additional services when compared to Loran-C, and enable eLoran to serve as a backup to satellite navigation in many important applications. The Czech Technical University in Prague (CTU) participates in the eLoran research activities coordinated by the General Lighthouse Authorities of the United Kingdom and Ireland (GLAs). In our work we have focused on questions that arise when considering introducing new eLoran stations into an existing network. In particular, this paper explores the issue of Cross-Rate Interference (CRI) among eLoran transmissions and possible ways of its mitigation at the receiver end. An eLoran receiver performance model is presented and validated using an experimental eLoran signal simulator developed by a joint effort of CTU and GLAs. The resulting model is used to evaluate the achievable positioning accuracy of eLoran over the British Isles.
KEYWORDS: Positioning System, Positioning Accuracy, e-Loran, Loran C, CrossRate Interference (CRI), Additional Secondary Factors (ASF), Positioning, Navigation and Timing (PNT), White Gaussian Noise (WGN)
REFERENCES
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Citation note:
Safar J., Vejražka F., Williams P.: Assessing the Limits of eLoran Positioning Accuracy. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 5, No. 1, pp. 93-101, 2011
Other publications of authors:
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