11 Facts About Radar


Radar is a detection system that uses radio waves to determine the distance (ranging), angle, and radial velocity of objects relative to the site.

FactSnippet No. 483,133

Radar was developed secretly for military use by several countries in the period before and during World War II.

FactSnippet No. 483,134

Radar obtained a patent for his detection device in April 1904 and later a patent for a related amendment for estimating the distance to the ship.

FactSnippet No. 483,135

Radar obtained a British patent on 23 September 1904 for a full radar system, that he called a telemobiloscope.

FactSnippet No. 483,136

Radar system has a transmitter that emits radio waves known as radar signals in predetermined directions.

FactSnippet No. 483,137

Related searches

Moon Sun

Radar signals are reflected especially well by materials of considerable electrical conductivity—such as most metals, seawater, and wet ground.

FactSnippet No. 483,138

Radar receivers are usually, but not always, in the same location as the transmitter.

FactSnippet No. 483,139

Radar relies on its own transmissions rather than light from the Sun or the Moon, or from electromagnetic waves emitted by the target objects themselves, such as infrared radiation.

FactSnippet No. 483,140

Radar absorbing material, containing resistive and sometimes magnetic substances, is used on military vehicles to reduce radar reflection.

FactSnippet No. 483,141

Radar beam follows a linear path in vacuum but follows a somewhat curved path in atmosphere due to variation in the refractive index of air, which is called the radar horizon.

FactSnippet No. 483,142

Radar come in a variety of configurations in the emitter, the receiver, the antenna, wavelength, scan strategies, etc.

FactSnippet No. 483,143