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Radar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1941 as an acronym for radio detection and ranging. The term has since entered the English language as a standard word, radar, losing the capitalization. Radar was originally called RDF (Radio Direction Finder, now used as a totally different device) in the United Kingdom.

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Blogs for Radar

Trade Radar - Stock Market Signals, Software and Analysis

Stock Market blog. Investment analysis and opinion. Reports on using the ... Trade Radar Home. Trade Radar Blog. Alert HQ. Download. Features. The Daily News. Toolbox ...blog.trade-radar.com/

Radar Guns Blog: Radar Gun News, Radar Gun Forum, Radar Gun Products ...

Radar Types - Pulse Radars, Doppler Radars, Frequency-Modulated FM Radar ... Work, Radar Guns Glossary, How to Buy, Recommended Resources. ...www.radargunsblog.com/

Under the Radar

Home. Companies. Judges. Schedule. Venue. Blog. Alumni. VC Circle. Under the Radar ... Get on his radar, and you may no longer be under the radar. ...www.undertheradarblog.com/

Political Radar

Political Radar Blog ... Home > Politics > Political Radar. Subscribe to this blog's feed. Daily Photo: Obama Jokes Around at G-20. auto industry rescue ...blogs.abcnews.com/politicalradar/

RadarOnline.com

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Wikipedia About Radar

Radar%20antenna.jpg

OUPRIME1.png

Radar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1941 as an acronym for radio detection and ranging. The term has since entered the English language as a standard word, radar, losing the capitalization. Radar was originally called RDF (Radio Direction Finder, now used as a totally different device) in the United Kingdom.

A radar system has a transmitter that emits microwaves or radio waves. These are reflected by the target back to a receiver, usually in the same location as the transmitter. Although the signal returned is usually very weak, the signal can be amplified and displayed. This enables radar to detect objects at ranges where other emissions, such as sound or visible light, would be too weak to detect. Radar is used in meteorological detection of precipitation, measuring ocean surface waves, air traffic control, police detection of speeding traffic, and by the military.

History

main: History of radar

Several inventors, scientists, and engineers contributed to the development of radar. The first to use radio waves to detect "the presence of distant metallic objects" was Christian Hülsmeyer, who in 1904 demonstrated the feasibility of detecting the presence of a ship in dense fog, but not its distance.Christian Hülsmeyer by Radar World He received Reichspatent Nr. 165546 for his pre-radar device in April 1904, and later patent 169154 for a related amendment for ranging. He also received a patent in England for his telemobiloscope on September 22 1904.

In August 1917 Nikola Tesla first established principles regarding frequency and power level for the first primitive radar units. He stated, "1 by their electromagnetic waves use we may produce at will, from a sending station, an electrical effect in any particular region of the globe; which we may determine the relative position or course of a moving object, such as a vessel at sea, the distance traversed by the same, or its speed."

Before the Second World War developments by the Americans, the Germans, the French, the Soviets, and the British led to the modern version of radar. In 1934 the French Émile Girardeau stated he was building a radar system "conceived according to the principles stated by Tesla" and obtained a patent (French Patent n° 788795 in 1934) for a working dual radar system, a part of which was installed on the Normandie liner in 1935. Copy of Patents for the invention of radar on www.radar-france.fr The same year, American Dr. Robert M. Page tested the first monopulse radar and the Soviet military engineer P.K.Oschepkov, in collaboration with Leningrad Electrophysical Institute, produced an experimental apparatus RAPID capable of detecting an aircraft within a 3 km of a receiver. Hungarian Zoltán Bay produced a working model by 1936 at the Tungsram laboratory in the same vein.

Search results for Radar

Intellicast - Current Radar in United States

A weather radar is used to locate precipitation, calculate its motion, estimate ... Digital radar systems now have capabilities far beyond what their ...www.intellicast.com/LocalWeather/World/UnitedStates/Radar/

Doppler Radar National Mosaic - NOAA's National Weather Service

Map from the National Weather Service provides Doppler radar weather maps of the United States.www.nws.noaa.gov/radar_tab.php

Radar

Pop culture, politics, media, and Hollywood get an irreverent twist in original reporting about the day's top news and trends.www.radaronline.com/

Radar - Wikipedia, the free encyclopedia

For other uses, see Radar (disambiguation). This long-range radar antenna, known as ALTAIR, is used to detect and track ... Main article: History of radar ...en.wikipedia.org/wiki/Radar_station

Radar Detectors and Jammers - Reviews & Shopping at Radar Busters

Offers anti photo radar and laser supplies, as well as detectors.www.radarbusters.com/

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News about Radar

Live Radar Weather Sunny today, rainy tomorrow

Sheboygan PressFor those of you participating in Bike and Walk to Work Week, you may want to grab a raincoat tomorrow.http://www.sheboygan-press.com/article/20090512/SHE0101/9051...

Radar system used to find lost boaters falling into disrepair

Florence Morning NewsAlong the Southeast coast, a system using high frequency radar antennas to help find lost boaters is falling into disrepair.http://www.postandcourier.com/news/2009/may/11/radar_system_...

Chelsea South American scout Alvial reveals top talent on radar

tribalfootball.comChelsea's South American scout Jorge Alvial has revealed the Premiership giants are tracking several exciting youngsters. read morehttp://rss.feedsportal.com/c/399/f/5930/s/4261d43/l/0L0Strib...

Birchall back on LA Galaxy radar

tribalfootball.comChris Birchall is back on the radar of LA Galaxy. read morehttp://www.tribalfootball.com/birchall-back-la-galaxy-radar-...

Bell Labs Spin-Off S-F-D Labs' Microwave Amplifiers Now Power U.S. Navy's Aegis Ballistic Missile Defense System Radar

INO NewsLOS ALTOS HILLS, Calif.,http://news.ino.com/headlines/?newsid=6898448176793

News about Radar

Unraveling Madoff's investment scam

Boston GlobeMadoff, obviously, didn't want the SEC looking at his operation, which is why he flew under the radar his entire career. He barred investment organizations from using his name to market their products. They all agreed like lapdogs because they were ... http://www.boston.com/ae/tv/articles/2009/05/12/unraveling_m...

'Idiot board works'

Winnipeg SunThere's an easy way to nail leadfoot drivers who speed through construction sites, playground areas and school zones without using photo radar. Bring back conventional radar enforcement and start using "speed trailers" -- a tool police experimented ... http://www.winnipegsun.com/news/columnists/tom_brodbeck/2009...

The Secrets Of Great Teamwork

ForbesTim's blog, the O'Reilly Radar, "watches the alpha geeks" and serves as a platform for advocacy about issues of importance to the technical community. He can also be found as @timoreilly on Twitter and is the co-author of The Twitter Book . See Also: ... http://www.forbes.com/2009/05/11/software-oreilly-media-tech...

Representatives want to prohibit erectile dysfunction commericials ...

New York Daily NewsThey also came in somewhat below the radar, because parents concerned about what their children see on television have traditionally focused on programs, not commercials. In terms of regulation, however, Congress and the courts have given the FCC ... http://www.nydailynews.com/entertainment/tv/2009/05/12/2009-...

US "harvesting" cancelled satellite for future uses

The IndependentThe budget does not include many new starts, but Payton said the Air Force expected to make decisions within the next year on how to meet growing demand for space-based radar, and would continue with additional AEHF and WGS procurement. He ... http://www.independent.co.uk/life-style/gadgets-and-tech/new...

Search results for Radar

Radar detectors and laser jammers Australia.

Radar Detector Superstore . Unit 3 / 6 Barnett Court. Morley, Perth WA 6062, Australia. E: info@radars.com.au. T: (+61) 08 9370 4038. F: (+61) 08 9271 4305http://www.radars.com.au/

Sperry Marine: Marine Radar

Marine Radars. Sperry Marine offers a range of high-performance commercial grade maritime radars. Read more about Sperry Marine?s radar heritage.http://www.sperrymarine.northropgrumman.com/Products/Radars

Radars for Rent

Auto Gadgets on a Rental Basis For Periodic Use don't buy a gadget you'll only use once Try Before You Buy avoid wasting money on a gadget you don't likehttp://www.radarsforrent.com/

RADARS

Rochdale and District Amateur Radio Society Callsign G0ROC RADARS. http://www.radars.me.uk/

radars

A selection of articles related to radars ... Dream Sharing Forum at Global Oneness Community. Share your dreams and let others help you with the interpretation!http://www.experiencefestival.com/radars

Wikipedia results for Radar

Radar - Wikipedia, the free encyclopedia

... his superiors the capabilities of a working prototype and patented the device in 1935 (British Patent GB593017) [13] [17] [18] It served as the base for the Chain Home network of radars ... http://en.wikipedia.org/wiki/Radar

Wave radar - Wikipedia, the free encyclopedia

Wind waves can be measured by several radar remote sensing techniques. Several instruments based on a variety of different concepts and techniques are available to the user and ... http://en.wikipedia.org/wiki/Wave_Radars

Clinton Radars - Wikipedia, the free encyclopedia

The Clinton Radars are a senior hockey team based out of Clinton, Ontario, Canada. They play in the Western Ontario Athletic Association Senior Hockey League.http://en.wikipedia.org/wiki/Clinton_Radars

Weather radar - Wikipedia, the free encyclopedia

Modern weather radars are mostly pulse-doppler radars, capable of detecting the motion of rain droplets in addition to intensity of the precipitation.http://en.wikipedia.org/wiki/Weather_radars

Phased array - Wikipedia, the free encyclopedia

For information about active as well as passive phased array radars, see also active electronically scanned array. Broadcasting. In broadcast engineering, phased arrays are required ... http://en.wikipedia.org/wiki/Phased_array
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Videos found for Radar

Stocks Under the Radar

Stocks Under the RadarA look at some of the day's under the radar stocks, with CNBC's Maria Bartiromo.Flash - Video

Vortex2: Doppler radar on wheels

Vortex2: Doppler radar on wheelsMay 8, 2009 In a live report, Dr. Josh Wurman shows us the Doppler radar truck that he helped to develop for tornado research. This is just part of the incredible technology...Video - Video

Feds: John Edwards Under the Radar

Feds: John Edwards Under the RadarFormer senator investigated for payments to mistress Rielle Hunter.Flash - Video

jeito moleque - sem radar

jeito moleque - sem radarmusica sem radar ao vivo com jeito moleque.Flash - Video

What is on Primus Financial's Radar...

What is on Primus Financial's Radar?With plans to become a major player in the Asian financial space, Robert Morse, chairman at Primus Financial Holdings tells CNBC's Martin So...Flash - Video

Answers for Radar

Matthew MWhat is the best radar detector on the market?Matthew MI'm on my third Escort detector (over 20+ year period). Always been happy with them (a bit expensive). They have Passport & Solo -- I get the one that is cordless, I think that is the Solo.ese_wolfieWhy does my radar detector go off when I get near a school bus?ese_wolfieWow I am shook no one actually knows why that already answered. I DO KNOW WHY!!!! Police departments put old radar guns/ or now refered to as a radar drone. In school buses and in thes constructio...YahooWhen was the first radar unit installed on the Roswell Army Air Field?YahooJuly 1947zzack9How does a radar work and how can it be inaccurate?zzack9Radio waves travel at the speed of light, 186,000 miles per second. If you send out a stream of radio waves, and it hits something to bounce it back, you can measure the time it took to come back and...TonyWhy doesnt my radar detector work overseas?TonyPolice radar guns use different radar bands (frequencies) in various countries. Many countries outside the US use the same bands that are used in the US, but as you've found, some countries use differ...
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