TAG: eLoran

Bill Supports eLoran as GPS Backup

March 27, 2015By

A bi-partisan group of legislators led by Congressman John Garamendi (D-Calif.) has introduced a bill that would require the U.S. Secretary of Defense to establish a backup for GPS within three years using eLoran. The National Positioning, Navigation, and Timing Resilience and Security Act of 2015, H.R. 1678, was co-sponsored by Congressmen Duncan Hunter (R-Calif.), Peter DeFazio (D-Ore.), and Frank LoBiondo (R-N.J). Garamendi is the... read more

U.S. Army Interested in eLoran PNT for the Warfighter

January 15, 2015By

The United States Army is soliciting information for eLoran receivers for the warfighter, either stand-alone or integrated with GPS. The Jan. 14 Request for Information (RFI) provides an outline for the potential use of the receivers in Army and other Department of Defense (DoD) maritime, aviation, or vehicular platforms and for position and timing purposes. “As part of the Assured Positioning, Navigation... read more

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PNT Board Report: GPS Critical Infrastructure, Concern over International Signals

January 13, 2015By

Report on the 14th meeting of the National Space-based PNT Advisory Board in Washington, D.C., held December 10-11, 2014. By Ron Hatch The December meeting of the PNT Advisory Board meeting brought forth important developments and proposals for the protection of GPS as part of the U.S. critical national infrastructure. A separate presentation made by speakers from the National Telecommunications... read more

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The System: eLoran Operational on Eastern UK Coast

December 1, 2014By
Bridge of the Galatea, a GLA vessel that carries a eLoran receiver and conducted tests of the new system.

Back-up to Vulnerable GPS Signals Required for Busy Shipping Lanes The General Lighthouse Authorities (GLAs) of the UK and Ireland announced October 31 the initial operational capability of UK maritime eLoran. Seven differential reference stations now provide additional position, navigation, and timing (PNT) information via low-frequency pulses to ships fitted with eLoran receivers. The service will help ensure they can... read more

eDLoran: The Next-Gen Loran

June 28, 2014By
vw-O2

Potential GNSS Back-up Improves to GPS-Level Accuracy
A new enhanced differential Loran system demonstrates 5-meter accuracy not achievable by the current DLoran system, and requires less expensive reference stations. A prototype tested in Rotterdam’s Europort area uses standard mobile telecom networks and the Internet to reduce correction data latency — a key source of error — by one to two orders of magnitude. read more

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The System: GLONASS Fumbles Forward

May 1, 2014By
GLONASS PLOT from the Roscosmos GLONASS Information-Analytical Centre, showing the 12-hour outage, with full service eventually restored on April 2.

Two April Disruptions Furnish Fodder for Multi-GNSS Receivers and Alternative PNT In an unprecedented total disruption of a fully operational GNSS constellation, all satellites in the Russian GLONASS broadcast corrupt information for 11 hours, from just past midnight until noon Russian time (UTC+4) on April 2 (or 5 p.m. on April 1 to 4  a.m. April 2, U.S. Eastern time).... read more

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GNSS Backup Delivers 5-Meter Accuracy

April 30, 2014By

The North Sea fairly boils with GNSS activity recently. Trials of the eLoran back-up for GNSS, Galileo maritime trials, Brad Parkinson’s Protect, Toughen, and Augment sermon at the European Navigation Conference in Rotterdam, and also at that conference, the dramatic release of news concerning an even newer Loran system, enhanced differential Loran, that not only backs up GNSS in the... read more

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GLONASS Blackout Coincides with Loran Authorization-in-Progress

April 8, 2014By

Russia’s April 1 GLONASS blackout occurred, ironically, only hours after the U.S. House of Representatives passed legislation to preserve infrastructure that could support a back-up system for GPS that could be used for critical infrastructure and applications in the event of a similar disaster occurring in the United States. The 2014 Coast Guard Authorization Act requires the Department of Homeland... read more

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