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RADAR

RADAR. RADAR. By Tony Kim and Ross Chu Block D Physics. Background on RADAR. RADAR which stands for RAdio Detection And Ranging was developed by Britain in the late 1930’s, during WW2 Before the war, Radars were used to detect objects through the usage of radio waves

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RADAR

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  1. RADAR RADAR By Tony Kim and Ross Chu Block D Physics

  2. Background on RADAR • RADAR which stands for RAdio Detection And Ranging was developed by Britain in the late 1930’s, during WW2 • Before the war, Radars were used to detect objects through the usage of radio waves • Now, they use RADAR to determine the location of moving or standing objects such as planes, ships, etc.

  3. How does a RADAR work? • A RADAR basically first sends out radio waves in order to discover the location of the desired object • Once the collective group of radio waves has found its object, it will scatter and reflect off it • These signals are then picked up by the receiver which translates the electrical waves into a monitor

  4. (Continued) • The Doppler Effect, learned in Chapter 16, is displayed through these radars • The frequency of these radio waves changes as the location relative to the antenna and the object changes

  5. Benefits of Radar • Uses for military: locating airplanes, ships, missiles, etc.; targets buildings and other objects; • Uses for astronomy: locating and viewing objects in space • Uses for ocean: locating ships and animals • Uses for air: airlines utilize radars to ensure the safety and location of various planes

  6. Drawbacks of Radar • The benefits of radars can be reversed if used for wrong purposes (ex. Missiles) • Dependency on radars can be disastrous for airlines or ships that can lose radio transmission through jamming, severe weather, etc. • Low risk of radiation due to transmission

  7. Video on Radar http://www.youtube.com/watch?v=kFoh7_JssuQ

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