What can radars not detect?

1) Clouds. Radar beams reflect off nearly everything, including clouds. But before NEXRAD radar images are sent to your iPhone, non-precipitation items are filtered out, including clouds. Unless it’s rain or snow , chances are it’s not showing up on your radar image.

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How far can a military radar detect?

Long-range surveillance radar uses HF, UHF, VHF, and L-band frequencies to detect targets out to 2,000 miles or more . How can it see that far when the curvature of the earth limits our line of sight to about 15 miles? Two ways: ground wave propagation (GWP) and over-the-horizon radar (OTH).

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What does a radar do in war?

Radar, which is essentially “seeing” with radio waves, found dozens of other uses in the war. It was used to aim searchlights, then to aim anti-aircraft guns . It was put on ships, where it was used to navigate at night and through fog, to locate enemy ships and aircraft, and to direct gunfire.

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How does radar frequency work?

Any electromagnetic device that detects and locates a target by radiating electromagnetic energy and uses the echos scattered from a target can be classified as a radar, regardless of its frequency. Radars have operated at frequencies from a few megahertz to the ultraviolet region of the electromagnetic spectrum .

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