What does the RADAR Receiver do?

What does the RADAR Receiver do?

• A. Converts electromagnetic energy into a visible or audible form; RF echos to video or audio signals.
• B. Generates and radiates an RF signal.
• C. Directs the RF energy to the antenna.
• D. Decodes video into target coordinates.

Answer: (A)

Radar works by sending out a radio pulse and listening for echoes. The receiver’s job is to take those returned signals, which are often very weak, and turn them into something a human can interpret. It amplifies and filters the incoming RF echoes and uses detection or demodulation to produce a video signal (or audible signal) that represents the target and its range on the display. In other words, it converts electromagnetic energy back into a form suitable for viewing or listening, so the operator can see where targets are. The other parts do different jobs: generating and radiating RF energy is the transmitter; directing that energy to the antenna is the antenna/front-end function; interpreting the video to obtain coordinates is the processing/display stage that follows the receiver.

Radar works by sending out a radio pulse and listening for echoes. The receiver’s job is to take those returned signals, which are often very weak, and turn them into something a human can interpret. It amplifies and filters the incoming RF echoes and uses detection or demodulation to produce a video signal (or audible signal) that represents the target and its range on the display. In other words, it converts electromagnetic energy back into a form suitable for viewing or listening, so the operator can see where targets are.

The other parts do different jobs: generating and radiating RF energy is the transmitter; directing that energy to the antenna is the antenna/front-end function; interpreting the video to obtain coordinates is the processing/display stage that follows the receiver.