
	Where results make sense

Topic: LORAN

	LORAN
		LORAN (LOng RAnge Navigation) is a terrestrial radio-navigation system using ground-based transmitters.
		Hyperbolic LORAN lines of position (LOP) are formed by measuring the difference in reception times of synchronized signals.
		LORAN suffers from electronic effects of weather and in particular atmospheric effects related to sunrise and sunset.
	www.ebroadcast.com.au /lookup/encyclopedia/lo/Loran-C.html (1014 words)

	LORAN Links (Site not responding. Last check: 2007-11-04)
		LORAN, which is used for navigation, is currently operated and maintained by the U.S. Coast Guard.
		Since LORAN is utilized by multiple transportation systems, not exclusively marine vessels, and in light of continued budget cuts, the Coast Guard is seeking to share the upkeep of LORAN with another government agency such as the Department of Transportation.
		LORAN is reliable; the transmission is secure, and the pulse can travel along the contours of the earth for great distances, thus providing excellent range with no line of site requirement.
	www.sinc.sunysb.edu /Class/cei511/fiore.htm (491 words)

	Coast Guard At War IV: LORAN, Volume 2
		Loran, its name compounded of the initial letters of the words — Long Range Navigation, is a system whereby a vessel with suitable equipment, comparatively simple to operate, and with special charts may determine its position even when hundreds of miles from shore.
		Loran was developed by the radiation laboratory of the Massachusetts Institute of Technology during 1941 from ideas proposed earlier, this development work was under the supervision of the National Defense Research Council.
		While the first Loran stations were constructed and manned by personnel of the Radiation Laboratory, this organization soon realized that it had neither the experience or the personnel to construct and man a large number of such stations, especially if these were to be located beyond the confines of continental United States.
	www.uscg.mil /HQ/G-CP/HISTORY/STATIONS/loran_volume_2.html (13523 words)

	Loran (and Loman) navigation system (via CobWeb/3.1 vn1.cs.wustl.edu) (Site not responding. Last check: 2007-11-04)
		A further consequence of the choice of frequency is that the range is not good over land, but Loran was developed primarily to give navigational assistance over and on the sea, where frequencies of this kind give very long ranges.
		The principle of measurement in Loran is just the same as in Gee save that the calibration is in microseconds instead of in the 'Gee units' derived from the 150 kc /s oscillator.
		Sky-wave synchronized Loran, or S.S. Loran, was in fact used during the last war with baselines over 1000 miles long and gave good results which were, of course, limited to the hours of darkness.
	www.radarpages.co.uk.cob-web.org:8888 /mob/navaids/loran/loran1.htm (690 words)

	LORAN - Wikipedia, the free encyclopedia
		LORAN was an American development of the British GEE radio navigation system (used during World War II).
		LORAN systems were up and running during World War II and were used extensively by the US Navy and Royal Navy.
		LORAN-A continued in operation partly due to the economy of the receivers and widespread use in civilian recreational and commercial navigation.
	en.wikipedia.org /wiki/LORAN (2225 words)

	TFT Codex 2000 - Loran Campaign
		The Loran Federation is a group of allied city states under the nominal leadership of the city of Loran.
		The Loran Federation is greatly reduced from its former extent, when it founded most of the cities and provinces of the lowland plains.
		The armies of the Loran Federation are based around the Citizen spear units of the various cities, suplemented by tribal mercenaries from neighboring provinces.
	www.loran.karoo.net /campaign/states.html (2413 words)

	International Loran Association
		For the past twelve years, when the decommissioning of LORAN was decreed, we have all engaged in a struggle to save this marvelous, multi-functional technology from abandonment.
		The November 2005 International Loran Association's "Case for Loran" article and other recent news/announcements regarding Loran navigation, positioning and precision timing can be found in the News page.
		The ILA was formed to provide a forum for those individuals who have a common interest in Loran, and who are committed to the system's growth and advancement.
	www.loran.org (656 words)

	AN EXPLANATION OF LORAN, GPS AND DGPS (Site not responding. Last check: 2007-11-04)
		LORAN has an absolute accuracy of only about 600 feet in a strong signal coverage area and in favorable weather conditions.
		LORAN has poor absolute accuracy, since it transmits at a relatively low frequency (100 kHz), and due to electrical interference caused by the distance and bearing from the LORAN transmitters, other electronic transmissions (TV, microwave, etc.) and the weather between the receiver and the transmitters.
		The LORAN system was scheduled to be shut down on December 31, 2000 due to federal budget concerns, but recent lobbying by navigational and aviation interests in Washington appears to have been successful in keeping the LORAN-C system operational until at least 2005.
	www.floridaconservation.org /marine/lorangpsdgps.htm (1414 words)

	GPS vs LORAN
		LORAN is a federally run system that uses land-based radio navigation transmitters to provide users position and timing information.
		An earlier version known as LORAN-A was used up until 1957 when it was replaced by LORAN-C. Russia has a compatible LORAN system called Chayka (which means seagull) which includes 8 high power stations, bringing to a total 41 high power stations worldwide.
		LORAN provides a precise time reference for telephone, power and other entities who require very precise timing information.
	www.ac11.org /gpsvs.htm (1392 words)

	Loran-A
		The value of Loran was recognized by the Commanding General of the Army Air Forces in their attacks on the Kuriles, when he forbade his bombers to take off on missions to the westward unless their Loran sets had been checked and found working properly.
		At this time, the position of Loran stations was accurately determined in advance of actual construction, in order to enable the Hydrographic Office to proceed with the preparation of special Loran charts, each of which had to go through the press several times because of the many colors required.
		New stations of the Japan Loran chain would provide navigational aid for the bombers which were concentrating on the main islands of the Japanese Empire, and for the amphibious units in their projected assault upon Japan.
	www.jproc.ca /hyperbolic/lora_ww2chains.html (10610 words)

	Loran Associates Inc. - Custom Fabrication (Site not responding. Last check: 2007-11-04)
		A Loran exhibit is one detailed and built to endure the rigors of exhibiting.
		A Loran exhibit is built by skilled journeymen using the latest and most innovative equipment.
		A Loran exhibit is the heart and soul of what we do, it's why we're here.
	www.loranassociates.com /what/fabrication.aspx (109 words)

	New Page 2 (Site not responding. Last check: 2007-11-04)
		Note: A loran receiver measures differences in the times of arrival of the signals from the various stations.
		While Global Positioning Systems (GPS) use satellites for navigation, LORAN uses ground stations to transmit signals to the LORAN reciever which are less expensive to maintain.
		Thus LORAN is considered a viable alternative to GPS.
	www.sinc.sunysb.edu /Class/cei511/loran.htm (195 words)

	Loran - Search Results - MSN Encarta
		Loran, abbreviation of the phrase long range navigation, used to designate a radio navigation system developed during World War II.
		Loran is the pulsed hyperbolic system developed by the United States during World War II to provide long-range navigation over sea for ships and...
		In particular, the angle formed at a point on the hyperbola by the lines joining the point to the...
	uk.encarta.msn.com /Loran.html (132 words)

	Loran-C - Furure Developments
		Loran’s wavelength and signal strength enable it to penetrate into areas where GPS has difficulty because of line-of-sight blockage as in urban or forested situations.
		Loran penetration into cities and its ability to provide an indefinite backup to GPS in timing applications are two additional advantages Loran provides in telecommunication applications.
		In north-west Europe, where Loran is used primarily for air to land and maritime navigation, and where the GPS/DoT lobby was not so strong, Denmark, France, Germany, Ireland, Norway and the Netherlands teamed up to form NELS with the expectation to modernize existing transmitters and establish some new ones.
	www.jproc.ca /hyperbolic/loran_c_future.html (2471 words)

	LORAN information from the Stanford GPS Lab (Site not responding. Last check: 2007-11-04)
		One drawback for aviation is that Loran has never been certified for approaches and prior attempts in the late 1980s to certify Loran for approach failed due to several deficiencies in the system.
		The Loran efforts at Stanford University are focused on developing Loran for aviation.
		In the area of Loran, it includes recipients of the International Loran Association (ILA) William Polhemus (’00) and ILA President’s Award (’03).
	waas.stanford.edu /research/loran.htm (383 words)

	BoatUS Government Affairs: Loran Termination Proposed by Coast Guard (via CobWeb/3.1 vn1.cs.wustl.edu) (Site not responding. Last check: 2007-11-04)
		In addition, a developing market of eLoran receivers is showing promise by combining the best attributes of Loran and GPS systems into a very accurate and reliable receiver.
		Since the GPS signal is relatively weak, there is concern that it's susceptible to jamming, which could present national security problems if it is the sole working navigation system for the U.S. Testing has shown Loran to be virtually jam-proof.
		In Congress, the House-Senate Conference Committee placed several eyebrow-raising administrative roadblocks for DHS to overcome before shutting down the system, including requesting the names of officials supporting Loran closure in government agencies, other than the Coast Guard, that would be affected.
	www.boatus.com.cob-web.org:8888 /gov/loran.htm (430 words)

	History of Satellite Navigation
		The LORAN-A (standard LORAN) system was developed during World War II at the Massachusetts Institute of Technology.
		LORAN stands for LOng Range Navigation and was developed in response to the need for precise navigation for military ships and aircraft.
		It was developed to provide the Department of Defense (DOD) with a radionavigation capability with longer range and much greater accuracy than its predecessor, Loran-A. Loran-C is the federally provided radionavigation system for civil marine use in U.S. coastal waters.
	ares.redsword.com /GPS/old/sum_pre.htm (1020 words)

	Office of Coast Survey - Loran - C (Site not responding. Last check: 2007-11-04)
		They represent the latest information available and are useful for correcting older loran readings recorded prior to and shortly after that time.
		However, within 10 miles of the coast, ASF corrections have changed due to coastal construction throughout the United States and the increase in the number of coastal radio transmitters.
		The International Association of Lighthouse Authorities (IALA), the organization responsible for the coordination of rate assignments and chain data.
	chartmaker.ncd.noaa.gov /mcd/loranc.htm (348 words)

	LORAN (Site not responding. Last check: 2007-11-04)
		LORAN (Literally Long Range Navigation) is a radio navigation system using land-based radio transmitters operated in the United States by the U.S. Coast Guard and receivers used in land, sea and air applications for position determination.
		For land applications, LORAN may be useful in filling gaps in GPS coverage in an "urban canyon" environment.
		For aviation, LORAN is under consideration for possible augmentation of GPS based navigation systems.
	www.galaxyscientific.com /areas/navigati/ngs15.htm (177 words)

	Geographic Information System Loran-C Coverage Modeling
		In 1989 a new coverage generator was produced by the Synetics Corporation and the U.S. Coast Guard for the U.S. Department of Transportation.
		The use of triad geometry as a criteria continues in such publications as the newest User Handbook [9] and the FAA Advisory Circular 90-92, where the Loran- C oceanic and national air space coverage diagrams are based on three station hyperbolic positioning techniques [10].
		Loran- C coverage prediction and graphic display of coverage limits are well suited to GIS modeling.
	www.colorado.edu /geography/gcraft/notes/gisloran/gisloran.html (4742 words)

	Aviation LORAN Avionics Systems presented by Eastern Avionics International, Inc.
		Their rationale is that since LORAN has become much more than a marine navigation aid, they should not be solely responsible for its maintenance.
		Furthermore, the cost to maintain a few LORAN ground stations is peanuts relative to the cost to maintaining GPS satellites and hundreds of aging VOR stations.
		Additionally, although GPS owners will tell you that LORAN isn't quite as accurate (it might be off a quarter of a mile, for instance), most VFR pilots won't ever need to navigate within a 50 foot tolerance in any case.
	www.avionix.com /loran.html (677 words)

	Response to RFP: Loran
		Loran Technologies, Inc. is pleased to respond to the Centralization Corp. Request for Proposal for network monitoring and alerting.
		Loran offers the Kinnetics Network Management System, which meets and exceeds all stated requirements, providing a management solution that will grow as Centralization Corp’s management needs grow and change.
		Loran Technologies Inc. is offering Kinnetics Network Management System as a solution to the proposed requirement.
	www.networkworld.com /reviews/0823rfploran.html (1341 words)

	Loran Family Crest
		Scotland, with its skirl of bagpipes and colorful tartans is the homeland of the noble surname Loran.
		Local names originally denoted the proprietorship of the village or estate.The Loran family originally lived in the French province of Lorraine, before moving to Scotland, where the name was passed down through many generations.
		In the Loran coat of arms as in all coat of arms the crest is only one element of the full armorial achievement.
	www.houseofnames.com /xq/asp.fc/qx/loran-family-crest.htm?a=54323-224 (595 words)

	Andren Software - LoranGPS Loran GPS Conversion Software, Plot, Map, Upload your coordinates to your GPS directly. (via ... (Site not responding. Last check: 2007-11-04)
		The LoranGPS program is a tool for fishermen and divers to manage collections of GPS (or Loran) readings (waypoints) and print an organized book of listings and maps.
		Carl Andren, the creator of this program, is a member of the Institute of Navigation, the International Loran Association, and the Institute of Electrical and Electronic Engineers.
		This allows the user to calibrate the loran to GPS conversion to close to the original Loran accuracy using local reference points.
	www.andren.com.cob-web.org:8888 (656 words)

Try your search on: Qwika (all wikis)