How Doppler Radars Works

How Doppler Radars Works

Doppler Radars produces electromagnetic waves, such as for instance microwaves or radio waves. The waves hit the mark and are reflected back towards the detector. In the same way to echolocation in bats, the time it takes for all the wave to mirror right back can be used to figure out the length. By delivering down waves of a known frequency, the radar can also be used to look for the velocity of this target. When a police  automobile drives past, the siren sounds high-pitched as it heads in your direction, and rapidly changes to a lower pitch once it has zoomed past – this might be referred to as Doppler impact. If the radar target is going towards the detector the frequency for the waves coming to the detector is increased, and when the prospective is moving away, the frequency is decreased,  enabling its velocity to be determined. Doppler radar has a number of applications. Law enforcement use hand held radar guns to determine the speed of passing vehicles, while military planes have pulse radars for targeting. Large-scale Doppler radar is also used to scan the environment to check out aircraft, or to track and predict the current weather.

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