loran

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lo·ran

(lôr′ăn′)
n.
A long-range navigational system in which position is determined by an analysis involving the time intervals between pulsed radio signals from two or more pairs of ground stations of known position.
[lo(ng-)ra(nge) n(avigation).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

loran

(ˈlɔːrən)
n
(Navigation) a radio navigation system operating over long distances. Synchronized pulses are transmitted from widely spaced radio stations to aircraft or shipping, the time of arrival of the pulses being used to determine position
[C20: lo(ng-)ra(nge) n(avigation)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

lo•ran

(ˈlɔr æn, ˈloʊr-)

n.
(sometimes cap.) a navigational system for locating one's position by determining the time displacement between radio signals from two known stations.
[1940–45, Amer.; lo(ng)ra(nge)n(avigation)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

loran

A long-range radio navigation position fixing system using the time difference of reception of pulse type transmissions from two or more fixed stations. This term is derived from the words long-range electronic navigation.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
References in periodicals archive ?
To add the capability onto a smart phone, one would simply add the eLoran signal to the communications chip, he said.
The United States must be up to par with other countries that have already taken steps to beef up their navigation systems, he said, noting that Russia and China have already deployed devices similar to eLoran. Goward added that Russia's doctrine states that it must be able to operate its equipment using land-based signals.
Using eLoran would be an efficient employment of resources because the necessary sites, which were put into place during World War II, are still owned by the Coast Guard and Department of Homeland Security, he said.
But the qualities of the signals used in eLoran are different to those of GPS signals--eLoran uses transmitters on the earth's surface to send out high-power, low-frequency radio signals.
The eLoran signal is about 10,000 times stronger than this, which means that any device to jam the signal also needs to be 10,000 times stronger.
In spite of its relatively low cost and technical maturity, America's eLoran system has yet to be built, and we have fallen behind much of the world in this critical security infrastructure.
The Coast Guard has experience with such systems and owns the infrastructure upon which eLoran will be built.