RADAR which stands for RAdio Detection And Ranging was developed by Britain in the late 1930’s,...
-
Upload
melinda-ray -
Category
Documents
-
view
220 -
download
0
Transcript of RADAR which stands for RAdio Detection And Ranging was developed by Britain in the late 1930’s,...
RADAR which stands for RAdio Detec-tion 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 ob-jects such as planes, ships, etc.
Background on RADAR
A RADAR basically first sends out ra-dio waves in order to discover the lo-cation 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
How does a RADAR work?
The Doppler Effect, learned in Chap-ter 16, is displayed through these radars
The frequency of these radio waves changes as the location relative to the antenna and the object changes
(Continued)
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 ani-mals
Uses for air: airlines utilize radars to en-sure the safety and location of various planes
Benefits of Radar
The benefits of radars can be re-versed if used for wrong purposes (ex. Missiles)
Dependency on radars can be disas-trous for airlines or ships that can lose radio transmission through jam-ming, severe weather, etc.
Low risk of radiation due to transmis-sion
Drawbacks of Radar
http://www.youtube.com/watch?v=kFoh7_JssuQ
Video on Radar