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What (who) is 3D radar - definition
3D radar
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![Diagram of a typical 2D radar rotating [[cosecant squared antenna]] pattern.](https://commons.wikimedia.org/wiki/Special:FilePath/2d-radarp.jpg?width=200 "Diagram of a typical 2D radar rotating [[cosecant squared antenna]] pattern.")
PROVIDES FOR RADAR COVERAGE IN THREE DIMENSIONS
3D radar provides for radar ranging and direction in three dimensions. In addition to range, the more common two-dimensional radar provides only azimuth for direction, whereas the 3D radar also provides elevation.
3D selfie
![Fantasitron 3D photo booth at [[Madurodam]]](https://commons.wikimedia.org/wiki/Special:FilePath/Fantasitron photo booth at Madurodam can scan up to two people at a time IMG 3797 FRD.jpg?width=200 "Fantasitron 3D photo booth at [[Madurodam]]")
A 3D selfie is a 3D-printed scale replica of a person or their face. These three-dimensional selfies are also known as 3D portraits, 3D figurines, 3D-printed figurines, mini-me figurines and miniature statues.
radar
![3D Doppler radar spectrum showing a [[Barker code]] of 13](https://commons.wikimedia.org/wiki/Special:FilePath/3D Doppler Radar Spectrum showing a Barker Code of 13.jpg?width=200 "3D Doppler radar spectrum showing a [[Barker code]] of 13")
![A [[Chain Home]] tower in Great Baddow, Essex, United Kingdom](https://commons.wikimedia.org/wiki/Special:FilePath/Chain home.jpg?width=200 "A [[Chain Home]] tower in Great Baddow, Essex, United Kingdom")
![Change of [[wavelength]] caused by motion of the source](https://commons.wikimedia.org/wiki/Special:FilePath/Doppler effect diagrammatic.svg?width=200 "Change of [[wavelength]] caused by motion of the source")
![Experimental radar antenna, US [[Naval Research Laboratory]], Anacostia, D. C., from the late 1930s (photo taken in 1945)](https://commons.wikimedia.org/wiki/Special:FilePath/Early radar antenna - US Naval Research Laboratory Anacostia.jpg?width=200 "Experimental radar antenna, US [[Naval Research Laboratory]], Anacostia, D. C., from the late 1930s (photo taken in 1945)")
![echoes]] from a target cause ghosts to appear.](https://commons.wikimedia.org/wiki/Special:FilePath/Multipath propagation diagram en.svg?width=200 "echoes]] from a target cause ghosts to appear.")
![[[Phased array]]: Not all radar antennas must rotate to scan the sky.](https://commons.wikimedia.org/wiki/Special:FilePath/PAVE PAWS Radar Clear AFS Alaska.jpg?width=200 "[[Phased array]]: Not all radar antennas must rotate to scan the sky.")
![The first workable unit built by [[Robert Watson-Watt]] and his team](https://commons.wikimedia.org/wiki/Special:FilePath/Watson Radar.jpg?width=200 "The first workable unit built by [[Robert Watson-Watt]] and his team")
![Memorial plaque commemorating Robert Watson-Watt and [[Arnold Wilkins]]](https://commons.wikimedia.org/wiki/Special:FilePath/Watson watt 02 fr.jpg?width=200 "Memorial plaque commemorating Robert Watson-Watt and [[Arnold Wilkins]]")
OBJECT DETECTION SYSTEM BASED ON RADIO WAVES
Radio detection and ranging; Airport radar; Radars; RADAR; Radio detecting and ranging; Radar illumination; Radio Detection and Ranging; Radar Homing and Warning; Radar station; Coherent processing interval; Radar system; Microwave radar; Fill pulse; Radar equation; Centimetric radar; Coherent Processing Interval; Radar distance measurement; Radar communication; Air search radar; Radar systems; Remote Radar Head; Applications of radar; Palmer Scan; Radar signal processing; Derax; Radar antenna design
n. early-warning radar
