Can eloran Deliver Resilient PNT?

Nick Ward, Chris Hargreaves, Paul Williams, Martin Bransby

Abstract:	The implementation of e-Navigation is underway. This concept for the harmonization and integration of maritime information systems onboard and ashore is likely to become a reality over the next five years, leading to fewer accidents, safer more efficient navigation and protection of the environment. Almost every solution provided under the e-Navigation initiative depends on an electronic position input. At present that input comes almost exclusively from GPS. Given the vulnerability of GPS (and other Global Navigation Satellite Systems - GNSS) to disruption, that situation is not sustainable. Various options for GNSS backup are being explored. This paper looks at some of the alternatives that have been tested and demonstrated and assesses their potential for completing GNSS to provide resilient PNT. eLoran is the most advanced of the alternatives and the only one likely to be ready in time for the implementation of e-Navigation: eLoran has reached Initial Operational Capability in the UK. This paper reports the results of demonstrations carried out there, describes the equipment being evaluated and sets out the steps towards Full Operational Capability. The status of Loran in other parts of the World is reported and some initiatives proposed that could make it a realistic component of a World Wide Radio Navigation System, providing Resilient PNT for all applications.
Published in:	Proceedings of the ION 2015 Pacific PNT Meeting April 20 - 23, 2015 Marriott Waikiki Beach Resort & Spa Honolulu, Hawaii
Pages:	1051 - 1054
Cite this article:	Ward, Nick, Hargreaves, Chris, Williams, Paul, Bransby, Martin, "Can eloran Deliver Resilient PNT?," Proceedings of the ION 2015 Pacific PNT Meeting, Honolulu, Hawaii, April 2015, pp. 1051-1054.
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