Browse > Article
http://dx.doi.org/10.5394/KINPR.2019.43.1.23

Loran-C Multiple Chain Positioning using ToA Measurements  

Kim, Youngki (Korea Research Institute of Ships & Ocearn Engineering)
Fang, Tae Hyun (Korea Research Institute of Ships & Ocearn Engineering)
Kim, Don (Korea Research Institute of Ships & Ocearn Engineering)
Seo, Kiyeol (Korea Research Institute of Ships & Ocearn Engineering)
Park, Sang Hyun (Korea Research Institute of Ships & Ocearn Engineering)
Publication Information
Journal of Navigation and Port Research / v.43, no.1, 2019 , pp. 23-32 More about this Journal
Abstract
In this paper, we proposed a multi-chain Time of Arrival (ToA) positioning method to estimate positions using all received Loran-C signals from multiple chains without constraining to a single chain. Conventionally, we have to choose only one chain among several available chains for position estimation using Loran-C. Therefore, the number of signals to be used for positioning is limited to three to five. In general, if more signals are used for positioning estimation, its performance tends to be improved in terms of accuracy and availability. To validate the proposed method for multi-chain Loran-C, we firstly carried out a static positioning test in land. By analyzing the test results, we confirmed that the proposed method works well under a multi-chain Loran-C scenario. Subsequently, another mobile positioning test was conducted on board a vessel under a practical application scenario. From this second test, we successfully demonstrated that the multi-chain ToA positioning method even in situations where the conventional single-chain Loran-C approach fails for positioning.
Keywords
Loran; eLoran; ToA; Multiple Chain; Positioning;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Dickinson, W. T. (1959), Engineering Evaluation of the Loran-C Navigation System, Jansky & Bailey Inc.
2 GLAs(2006), The Case for eLORAN, Research and Radionavigation General Lighthouse Authorities of the United Kingdom and Ireland.
3 GLAs(2012), Radio Navigation Plan, General Lighthouse Authorities of the United Kingdom and Ireland.
4 Goo, J. H. et al. (2007), "LORAN-C using and Position error improvement against being unable to use the Global Positioning System(GPS)", The Journal of Korea Navigation Institute, Vol. 11, No. 1, pp. 1-8.
5 Groves, P. D. (2013), Principles of GNSS, Inertial, and Multisensor Integrated Navigation Systems (Boston: Artech House), pp. 484-487.
6 ILA(2007), Enhanced Loran (eLoran) Definition Document, International Loran Association.
7 Jorgensen, T. H. and Hernes, G. M. (2000), "Loran-C integrated with satellite systems NELS status report", Proceedings of the IAIN World Congress In association with the U.S. ION Annual Meeting, pp. 339-343.
8 Kaplan, E. D. and Hegarty, C. J. (2005), Understanding GPS, Principles and Applications (Norwood:Artech House), pp. 54-58.
9 Offermans, G. et al. (2015), "eLoran Initial Operational Capability in the United Kingdom - First Results", Proceedings of the 2015 International Technical Meeting (ION ITM 2015), pp. 27-39.
10 Offermans, G., Bartlett, S. and Schue, C. (2017), "Providing a Resilient Timing and UTC Service Using eLoran in the United States", Journal of The Institute of Navigation, Vol. 64, No. 3, pp. 339-349.   DOI
11 Peterson, B., Dykstra, K., Carroll, K. and Narins, M. (2003), "Technology to Evaluate eLoran Performance", Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), pp. 1327-1344.
12 Roth, G. L. et al. (2005), "Enhanced or eLoran for Time and Frequency Applications", Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting, pp. 816-823.
13 RTCM(2016), Minimum Performance Standards for Marine eLoran Receiving Equipment, Radio Technical Commission for Maritime Services, RTCM Paper 125-2016-SC127-112.
14 USCG(1992), Loran-C User Handbook, Department of Transportation Publication, COMMANDANT PUBLIC ATION P16562.5.
15 Yang, S. H. et al. (2010), "Inland ASF Measurement by Signal of the 9930M Station", Journal of Navigation and Port Research, Vol. 34, No. 8, pp. 603-607.   DOI
16 Vincenty, T. (1975), "Direct and Inverse Solutions of Geodesics on the Ellipsoid with Application of Nested Equations", Survey Review, Vol. 23, No. 176, pp. 88-93.   DOI