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radar
radar
radar (acronym for
radio
detecting
and
ranging) Electronic system for determining the direction and distance of objects. Developed during World War II, it works by the transmission of pulses of
radio waves to an object. The object reflects the pulses, which are detected by an antenna. By measuring the time it takes for the reflected waves to return, the object's distance may be calculated, and its direction ascertained from the alignment of the receiving radar antenna.
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Radar on a chip: 101 uses in your life.
Magazine article from: Popular Science; 3/1/1995; ; 700+ words
; ...type is the pulse-echo radar. Like the sonar on a...sends out a "ping" of radar and listens for the echo...shorter pulses than other radars. Each is less than a...frequencies than conventional radars. That makes the radar less susceptible to interference...
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Radar Characteristics, Part One.
Magazine article from: Journal of Electronic Defense; 5/1/2000; ; 700+ words
; ...or attributes of radars by which we make...considerations follow: * Radar implementations can...Synthetic-aperture radars use movement of the...high-resolution radar maps. Basic Radar...diagram for a pulse radar. Pulse radars transmit short...
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Radar Characteristics, Part 4 -- Radar Modulation.
Magazine article from: Journal of Electronic Defense; 8/1/2000; ; 700+ words
; ...opposed to a pulse-Doppler radar) is typically of the order...the whole pulse, or (if the radar's receiver has sufficient...pulse is easily measured. Pulse radars have the significant advantage...transmission. This allows the radar to use a single antenna for...
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Radar planning, preparation and employment of 3-tiered coverage: LCMR, Q-36 and Q-37.(Lightweight Countermortar Radar )
Magazine article from: FA Journal; 9/1/2004; ; 700+ words
; ...difficult due to the way the radar operates. Therefore...operating bases (FOBs) and radars must be planned carefully...significant problems for the radar. The term "radar clutter...Lightweight Countermortar Radar (LCMR). Short-range...challenge for the Q-36 radars to track and ...
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Radars reconsidered: what you should know before buying one of today's versatile models.(Electronics)
Magazine article from: Yachting; 1/1/2004; ; 700+ words
; ...professional installation of radar on recreational boats...complex. Today's radars not only tell you...integration for up to 10 radar, chart plotter or...anywhere on your boat. Radars, chart plotters...Almost all marine radars will accept position...waypoints on the radar display and ...
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Radar Roundup.(Marine radar)
Magazine article from: Yachting; 1/1/2007; ; 700+ words
; ...plotting targets on the radar aboard larger yachts...s workload. Smaller radars may have a mini-ARPA...specifications for most of the radars of interest to yachtsmen. Note that while most radars use color LCD screens...the specifications for radar, the antenna's horizontal...
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Radar ECCM in World War II. (electronic counter-counter measures)
Magazine article from: Journal of Electronic Defense; 1/1/1990; ; 700+ words
; ...use it against British radar without adversely affecting German radars. Although the Germans did jam British radar, German jamming was...officers and developed radars at new frequencies, including microwave radar (which was unknown to...
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Modern radars and antennas. (new designs for weather observation to be installed soon)
Magazine article from: Microwave Journal; 1/1/1990; ; 700+ words
; ...plus a number of additional radars. The second of these radars, the terminal Doppler weather radar (TDWR), initially will...weather clutter. For those radar engineers familiar with search and tracking radars, the use of a pencil beam...
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Radar or Laser: Which Detectors Work?
Newspaper article from: Chicago Sun-Times; 6/21/1992; ; 700+ words
; Q. I am in the market for a new radar detector, but I am confused. With the...devices the police are now using, haven't radar detectors as we know them become obsolete...on the market. Will they also receive radar signals? Can you help? A. Radar detectors...
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RADAR celebrating five years of looking out for motorists' rights. (Radio Association Defending Airwave Rights)
PR Newswire; 7/13/1990; 700+ words
; RADAR CELEBRATING FIVE YEARS OF LOOKING OUT FOR...motorists can't be guaranteed that the radar gun pointing their way is consistently accurate...Experts have estimated as many as one in five radar-backed speeding citations may be based...
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Radar
Encyclopedia entry from: UXL Encyclopedia of Science
Radar Radar (a contraction of ra dio d etection a nd r anging) is an electronic system...disturbance, such as a storm, all the way to the horizon. Within its range, radar can reveal clouds, a landmass, or objects such as ships, airplanes...
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radar
Book article from: The Columbia Encyclopedia, Sixth Edition
radar system or technique for detecting the position, movement...radio waves reflected from its surface. Although most radar units use microwave frequencies, the principle of radar is not confined to any particular frequency range. There...
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RADAR
Book article from: The Oxford Companion to American Military History
...x2010;wave radars emit a steady signal...called Doppler radar, cannot track...specific types of radars, such as Synthetic Aperture Radar, which electronically...bombers equipped with radar jamming transmitters...x2010; laying radars and assisted in...
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Weather Radar
Book article from: World of Earth Science
Weather radar Radio Detection And Ranging systems, known as radar, were developed in Britain in the 1930s as a defense...While their military use flourished during World War II, radar was not used commercially until the 1950s. Today, radar...
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RADAR and SONAR
Book article from: World of Earth Science
...the end of 1938, primitive RADAR systems dotted the English...forces had developed a number of RADAR types and applications including...various gun sighting and tracking RADARs. Regardless of their application, both RADAR and SONAR targets scatter...
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