08-16-2017, 09:55 PM
Presentation On RADAR
[attachment=16494]
What is RADAR?
1.RADAR(Radio Detection And Ranging) is a way to detect and study far off targets by transmitting a radio pulse in the direction of the target and observing the reflection of the wave.
2 Its basically radio echo
Radar Basic Principles
The following figure shows the operating principle of a primary radar set. The radar antenna illuminates the target with a microwave signal, which is then reflected and picked up by a receiving device. The electrical signal picked up by the receiving antenna is called echo or return. The radar signal is generated by a powerful transmitter and received by a highly sensitive receiver.
Transmitter
The radar transmitter produces the short duration high-power rf pulses of energy that are into space by the antenna.
Duplexer
The duplexer alternately switches the antenna between the transmitter and receiver so that only one antenna need be used. This switching is necessary because the high-power pulses of the transmitter would destroy the receiver if energy were allowed to enter the receiver