The Identification of Possible Applications of The E-Loran System

Krzysztof Czaplewski 1, Adam Weintrit 2

1Gdynia Maritime University, Poland

2Gdynia Maritime University, Poland

DOI: DOI: 10.1515/aon-2018-0012


Global Navigation Satellite Systems (GNSS) more and more affect many areas of human
activity in the world. Every day human activity around the world depends upon satellite systems for positioning, navigation and timing. As these systems are commonly used further
efforts must be made to make GNSS more immune to on occurring more and more frequently
incidents of jamming and spoofing. It seems that eLoran system is currently the best the
technical and scientific solution to allowing for effective protection of the Global Navigation
Satellite Systems. Last year the authors presented eLoran system as a potential tool for
transmission of the national time signal [Curry et al., 2017]. This time the authors present
abilities of additional use of the eLoran as a back-up system for GNSS.


Marine Navigation, GNSS, PNT, eLoran, Positioning


[1] BBC, 2016. North Korea ‚jamming GPS signals’ near South border – news/world-asia-35940542 – 01.04.2016.
[2] BIPM, 2017. BIPM Annual Report on Time Activities, Volume 12, 2017.
[3] Chronos, 2017 – (10.10.2018).
[4] CNN, 2007. Jamming systems play secret role in Iraq – (13.08.2007).
[5] Curry C., 2011. Long Term Time & Timing Trials with eLoran. Chronos Technology,
ITSF Edinburgh, November.
[6] Curry C., 2014. Delivering a National Timescale Using eLoran. Chronos Technology
Ltd., Issue 1.0, 07 June.
[7] Curry C., Czaplewski K., Schue C., Weintrit A., 2017. The Use of eLoran System for
Transmission of the National Time Signal. [in]: Weintrit A. (ed.): Marine Navigation.
Conference Proceedings of the 12th International Conference on Marine Navigation
and Safety of Sea Transportation, TransNav 2017, 21-23 June 2017, Gdynia, Poland.
CRC Press, Taylor & Francis Group, Boca Raton – London – New York – Leiden, p.
[8] Czaplewski K., 2018. Does Poland need eLoran?, Transport, Systems, Telematics
Conference, Management Perspective for Transport Telematics, Springer Nature
Switzerland AG, CCIS 897, pp. 525-544, Basel, Switzerland.
[9] Czaplewski K, Goward D., 2016. Global Navigation Satellite Systems – Perspectives
on Development and Threats to System Operation. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 10, No. 2, pp. 183-
[10]Davies P.C.W., 2005. About Time: Einstein’s Unfinished Revolution. Simon & Schuster Paperback, New York.
[11]GLA, 2012. Radio Navigation Plan, United Kingdom.
[12]ILA, 2007. Enhanced Loran (eLoran) Definition Document. Report Version: 1.0, International Loran Association, 16th October.
[13]InformNapalm, 2016. Functionality of the automated jamming station (AJS) R-330Zh
Zhitel – – 23.04.2016.
[14]ITU, 2001. Recommendation ITU-R M.589-3, Technical Characteristics of Methods
of Data Transmission and Interference Protection for Radionavigation Services in the
Frequency Bands between 70 and 130 kHz.
[15]ITU, 2013. Recommendation ITU-T G.8272/Y.1367 – Timing characteristics of pri-mary reference time clocks, October.
[16]Johnson G.W., Swaszek P.F., Hartnett R.J., Shalaev R., Wiggins M., 2007. An Evaluation of eLoran as a Backup to GPS. 2007 IEEE Conference on Technologies for
Homeland Security, Woburn, MA, USA.
[17]Karutin S., 2015. Global Navigation Satellite System (GLONASS) Programme Update. International Committee on GNSS (ICG-10), Boulder, Colorado, USA.
[18]KASS, 2017. Korea Augmentation Satellite System – – 15.12.2017.
[19]Kautz C., 2017. Status Update on the European Satellite Navigation System (Galileo).
International Committee on GNSS (ICG-12), Kyoto, Japan.
[20]Martin H.W. III, 2017. GPS Program Update. International Committee on GNSS
(ICG-12), Kyoto, Japan.
[21]NASA, 2017. NASA Science Mission Directorate – –
[22]Offermans G., 2014. Eurofix Message Format, Ver.2.15, March.
[23]RAE, 2011. Global Navigation Space Systems: reliance and vulnerabilities, Royal
Academy of Engineering, March.
[24]Revnivykh I., 2017: Global Navigation Satellite System (GLONASS) Programme Update. International Committee on GNSS (ICG-12), Kyoto, Japan.
[25]Ridderbos K., 2002 (ed.). Time. The Darwin College Lectures, Cambridge University
[26]RNTF, 2018. Wider GPS Spoofing by Govt Frustrates Moscow Taxis, Customers –
[27]RTCM 1998. Recommended Standards for Differential GNSS (Global Navigation
Satellite Systems) Service, Version 2.2, RTCM Special Committee 104, January 15.
[28]RTCM, 2010. Minimum Performance Standards for Marine eLoran Receiving
Equipment, RTCM Special Committee SC127, Revision 2.0, March.
[29]Safar J., Vejražka F., Williams P., 2011. 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.
[30]Seo J. & Kim M., 2013. eLoran in Korea – Current Status and Future Plans. European Navigation Conference ENC 2013, Yonsei University, Korea.
[31]Sentinel, 2014. The Sentinel Report, Chronos Technology Ltd.
[32]Takizawa G. 2017, Status Update on the Quasi-Zenith Satellite System. International
Committee on GNSS (ICG-12), Kyoto, Japan.
[33]UrsaNav, 2018 –
[34]Volpe, 2009. The Use of eLORAN to Mitigate GPS Vulnerability for Positioning,
Navigation, and Timing Services. Final Report, John A. Volpe National Transportation Systems Center, Cambridge, Massachusetts.
[35]Weintrit A., 2011. The Time in the Navigation. Measures of Time: GMT – UTC – TAI GPST (in Polish). Przegląd Telekomunikacyjny, No. 7.
[36]Weintrit A., 2017. The Concept of Time in Navigation. TransNav, the International
Journal on Marine Navigation and Safety of Sea Transportation, Vol. 11, No. 2, pp.
[37]Weintrit A. & Kopacz P., 2012. Computational Algorithms Implemented in Marine
Navigation Electronic Systems. In: Mikulski J. (ed.) TST 2012, Communications in
Computer and Information Science, vol. 329. Telematics in the Transport Environment. Springer, Berlin, Heidelberg, pp. 148-158.
[38]Weintrit A. & Zalewski P., 2017. Guidelines for Multi-System Shipborne Radionavigation Receivers Dealing with the Harmonized Provision of PNT Data. In: Mikulski
J. (ed.) Transport System Telematics TST 2017, Communications in Computer and
Information Science. Springer, Heidelberg.