Abstract
Vulnerability to the interference of GPS (Global Positioning Systems) is one of the main obstacles to performing safe marine navigation. As eLoran (Enhanced Long Range Navigation), considered as the backup navigation system of GPS, has been developed specifically in several countries, the need for GPS / eLoran integrated navigation has emerged. This study represents the integrated algorithm for GPS and eLoran to overcome the vulnerability of GPS. The main research contents are as follows: a) Formula for integrated positioning of GPS / eLoran based on range domain is suggested. b) Essential ASF (Additional Secondary Factor) estimation filter to implement positioning by eLoran is presented in terms of real-time processing instead of employing ASF grid map, which should be pre-made at a local area and be distributed to marine users. c) Procedures for determining HPL (Horizontal Protection Level) are represented so that the reliability of the integrated navigation can be investigated. d) The marine test results are presented to validate the suggested methods based on the Loran-C signal. Test results show the integrated GPS and eLoran by the suggested methods can complement each other in terms of accuracy and reliability.
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References
E. Kaplan and C. Hegarty, Understanding GPS: Principles and Applications, 2nd Ed., Artech House, pp. 1-13, pp. 346–410, 2005.
G. W. Johnson, P. F. Swaszek, R. J. Hartnett, R. Shalaev, and M. Wiggins, “An evaluation of eLoran as a backup to GPS,” Proc. of IEEE Conference on Technologies for Homeland Security, Woburn, USA, pp. 95–100, May, 2007.
P. Williams, S. Basker, and N. Ward, “e-Navigation and the case for eLoran,” Journal of Navigation, vol. 61, no. 3, pp. 473–484, 2008.
International Maritime Organization (IMO), Performance Standards for Multi-System Shipborne Radionavigation Receivers, IMO Resolution MSC.401(95), 2015.
International Loran Association, Enhanced Loran (eLoran): Definition Document, International Loran Association, pp. 4, 2007.
S. Basker, The Case for eLoran, General Lighthouse Authorities, United Kingdom, 2006.
D. Last, “Is LORAN-C the answer to GPS vulnerability?,” European Journal of Navigation, vol. 1, no. 3, pp. 6–14, 2003.
P.-W. Son, S. H. Park, K. Seo, Y. Han, and J. Seo, “Development of the Korean eLoran testbed and analysis of its expected positioning accuracy,” Proc. of IALA (International Association of Marine Aids to Navigation and Lighthouse Authorities) Conference, Incheon, Korea, pp. 1–10, May, 2018.
K. Seo, S. H. Park, T. H. Fang, and S. Lee, “Overview of development status for eLoran testbed implement,” Proc. of Korean Institute of Navigation and Port Research Conference (in Korean), Busan, Korea, pp. 193–195, November, 2017.
S. Lo, M. Leathem, G. Offermans, G. T. Gunther, B. Peterson, G. Johnson, and P. Enge, “Primary, secondary, additional secondary factors for RTCM minimum performance specifications (MPS),” Proc. of The 38th Annual Technical Symposium of the International Loran Association, Portland, USA, pp. 693–715, October, 2009.
B. Peterson, R. Hartnett, D. Bruckner, R. Heatherington, and R. Fiedler, “Integrated GPS/LORAN, structures and issues,” Annual Meeting of The Institute of Navigation, Denver, USA, pp. 363–372, June, 1998.
C. Hide, C. Hill, T. Moore, C. Noakes, and D. Park, “Integrated GPS, LORAN-C and INS for land navigation applications,” International Technical Meeting of the Satellite Division of The Institute of Navigation, Fort Worth, USA, pp. 59–67, September, 2006.
R. Hartnett, P. F. Swaszek, and G. Johnson, “Integrated GPS/Loran receiver for ASF propagation studies,” International Technical Meeting of the Satellite Division of The Institute of Navigation, Portland, USA, pp. 968–977, September, 2003.
N. Luo, G. Mao, G. Lachapelle, and M. E. Cannon, “ASF effect analysis using an integrated GPS/eLORAN positioning system,” National Technical Meeting of The Institute of Navigation, Monterey, USA, pp. 967–976, January, 2006.
S. P. Song, M. Y. Shin, S. B. Son, Y.-B. Kim, and S. J. Lee, “The integrated eLoran/GPS navigation algorithm for reduced calculational complexity and high accuracy,” Transactions on The Korean Institute of Electrical Engineers (KIEE) (in Korean), vol. 60, no. 3, pp. 612–619, 2011.
B. B. Peterson, S. C. Lo, and P. K. Enge, “Integrating Loran and GNSS for safety of life applications,” International Technical Meeting of the Satellite Division of The Institute of Navigation, Savannah, USA, pp. 1619–1630, September, 2008.
P. G. Mattos, “GNSS and eLORAN tightly coupled,” International Technical Meeting of the Satellite Division of The Institute of Navigation, Savannah, USA, pp. 873–880, September, 2009.
T. H. Fang, Y. Kim, D. Kim, K. Seo, and S. H. Park, “Centralized fusion filter for GNSS/eLoran using augmented liner measurement equations,” The Institute of Positioning, Navigation, and Timing (IPNT) Conference (in Korean), Jeju, Korea, pp. 303–307, November, 2017.
T. H. Fang, Y. Kim, D. Kim, S. Lee, K. Seo, and S. H. Park, “Integrated GPS, INS, and eLoran for maritime tasks using ASF correction by Kalman filter,” Journal of Institute of Control, Robotics and Systems (in Korean), vol. 24, no. 8, pp. 346–353, 2018.
X. R. Li, Y. Zhu, J. Wang, and C. Han, “Optimal linear estimation fusion -Part I: Unified fusion rules,” IEEE Transactions on Information Theory, vol. 49, no. 9, pp. 2192–2208, 2003.
P. D. Groves, Principles of GNSS, Inertial, and Multisensory Integrated Navigation Systems, Artech House, Boston pp. 23–30, pp. 481-487, pp. 559-622, 2013.
L. Wang and S. Li, “Enhanced multi-sensor data fusion methodology based on multiple model estimation for integrated navigation system,” International Journal of Control, Automation, and Systems, vol. 16, no. 1, pp. 295–305, 2018.
Radio Technical Commission for Maritime Services (RTCM), Minimum Performance Standards for Marine eLoran Receiving Equipment, RTCM Special Committee 127, pp. 56, 2016.
B. Forssell, Radionavigation Systems, Artech House, Norwood, pp.13–18, 2008.
T. Vincenty, “Direct and inverse solutions of geodesics on the ellipsoid with application of nested equations,” Survey Review, vol. 23, no. 176, pp. 88–93, 1975.
Arthur Gelb, Applied Optimal Estimation, MIT Press, pp. 102–132, 1974.
P.-W. Son, J. H. Rhee, and J. Seo, “Novel multichain-based Loran positioning algorithm for resilient navigation,” IEEE Transactions on Aerospace and Electronic Systems, vol. 54, no. 2, pp. 666–679, 2018.
P.-W. Son, S. G. Park, K. Seo, S. H. Park, and T. H. Fang, “Preliminary study of the re-radiation effect of Loran signal to improve the positioning accuracy,” European Navigation Conference (ENC), Warsaw, Poland, pp. 1–4, April, 2019.
K. Kovach, “New user equivalent range error (UERE) budget for the modernized Navstar global positioning system (GPS),” National Technical Meeting of The Institute of Navigation, Anaheim, USA, pp. 550–573, January, 2000.
International Maritime Organization (IMO), Revised Maritime Policy and Requirements for a Future GNSS, IMO Resolution A.915(22), 2002.
R. Conley, “Results of the GPS JPO’s GPS performance baseline analysis: the GOSPAR Project. NAVIGATION,” Journal of the Institute of Navigation, vol.45, no.1, pp. 31–38, 1998.
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Recommended by Associate Editor Yingmin Jia under the direction of Editor Myo Taeg Lim. This research was supported by the project titled ‘Development of integrated R-Mode navigation system’, funded by the Ministry of Seas and Fisheries, Korea, and was supported by a grant (PES3460) from basic research program of Korea Research Institute of Ships & Ocean Engineering (KRISO)..
Tae Hyun Fang received his B.S., M.S., and Ph.D. degrees in Mechanical Engineering from Pusan National University, Busan, Korea, in 1994, 1998, and 2003, respectively. From 2004 to 2005, he was a visiting scholar at the Intelligent Transportation Research Center, Massachusetts Institute of Technology, Cambridge, United States. Since 2005, he has been with Maritime Safety and Environmental Research Division, Korea Research Institute of Ship and Ocean Engineering, Daejeon, Korea. His research interests include sensor fusion systems, PNT technology, and target tracking filter.
Youngki Kim received his B.S. and M.S. degrees from Mokpo National Maritime University, Korea, in 2008 and 2010, respectively. He is a research engineer at Korea Research Institute of Ships & Ocean Engineering (KRISO). His research interests include PNT Integrity Technology and resilient PNT systems for safety navigation.
Sul Gee Park received her B.S. and M.S. degrees from Chungnam National University, Korea, in 2008 and 2010, respectively. Her research interests include precise point positioning system and GPS/INS integrated navigation system design. Her current research interests focus on software defined radio GPS receiver and precise point positioning ambiguity resolution.
Kiyeol Seo is a principal researcher of the GNSS research center at Korea Research Institute of Ships & Ocean Engineering (KRISO). He received his B.S., M.S., and Ph.D. degrees from Mokpo National Maritime University, Korea, in 1995, 1998, and 2003, respectively. He has been involved in the development of enhance Loran (eLoran) System. His research interests include resilient PNT system and integrity monitoring, GNSS-R, and precise positioning technology for maritime applications.
Sang Hyun Park is a principal researcher of the GNSS research center at the Korea Research Institute of Ships & Ocean Engineering (KRISO). He received his B.S., M.S., and Ph.D. degrees from Chungnam National University, Korea, in 1994, 1996, and 2002, respectively. He had worked as a senior research engineer at Automotive Electronic R&D Center for Hyundai-Kia Motors. He has been involved in lots of radio navigation-related research projects such as a vessel berthing system using GPS, DGNSS reference stations and integrity monitors, and eLoran system, etc. His current research interests focus on resilient PNT systems for e-Navigation.
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Fang, T.H., Kim, Y., Park, S.G. et al. GPS and eLoran Integrated Navigation for Marine Applications Using Augmented Measurement Equation Based on Range Domain. Int. J. Control Autom. Syst. 18, 2349–2359 (2020). https://doi.org/10.1007/s12555-019-0287-y
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DOI: https://doi.org/10.1007/s12555-019-0287-y