radarBy: Mariana Mata and

Inés Arimany

WHAT IS It ?

• Measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects.

DID YOU KNOw...

• In the late

1930’s all of the

countries

involved in WWII

rushed to create

better radar

systems to use

in the war.

• Great Britain was one of the leading developers of radar in the years leading up to World War II.

• Britain’s built

radar stations

around the British

Isles to provide

warning of aerial

invasion. http://www.youtube.com/watch?v=0SPlmvIPv3g

WWII AND RADAR• From military point of

view two types of radar were usedfor detection and for fire control.

1• Used to create a radar

map of all objects in all directions and often as far as possible. Used for purposes such as:

DETECTION RADARS

early warning (detection of aircraft and ships)

ground controlled intercept of aircraft (done by directing fighter aircraft to detect incoming aircraft)

mapping (mapping of the ground terrain for navigation and targeting mostly by bombers)

2• Radar equivalent

of a searchlight.

Fire controls

In WWII mostly night fighters used fire control radars.

★

They are dedicated to the precise position of a previously detected particular target, ✓ to guide the operator to aim guns at the target and hit it without actually seeing it.

★

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DEVELOPED PROJECTS • Initially radars were

equipped with display devices like an electronics lab.

LATER…more operationally useful devices were invented, particularly the PPI (Plan Position Indicator) which is the familiar radar display which is a circular display that shows a beam which rotates with the rotating radar antenna and marks with light the positions of defected targets relative to their range.

Radar signals could also be used for navigation. (Ship or airplane)

http://www.youtube.com/watch?v=YTi_518ruI0

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WHAT IS

COMING

NEXT??

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THANK YOU for paying

attention!!!We Hope you enjoyed our presentation and eating candy while listening