How Does a Radar Work?

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How does a radar work? A radar works by sending out short pulses of radio waves, which bounce off objects and return to its antenna. By measuring the time it takes for the signal to return, radar calculates the distance of the object. The reflected signal is displayed as a radar cross-section, with its size depending on how much energy is reflected back.
Radar technology is used in aviation, weather tracking, military defense, air traffic control, and speed radar systems. From detecting aircraft to tracking storms, radar is an essential part of modern technology.
Crediots: Real Engineering, Environment and Climate Change Canada, TestTube 101,
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It's not "a RADAR". It's "RADAR" or "a RADAR system/unit". It's like asking how a toilet paper works.

bruceblackerby