what is radar used for ? what characteristic of sound does it use?

Answer 1

RADAR employs the same wave propagation phenomenon that bats use to navigate and catch food. Similar to hearing sound rebound in a canyon. The longer the echo takes to return the further away the object is that it bounced from. With sound the waves travel about 1000 ft per second but with RADAR the radio waves travel at the speed of light 186,000 miles per second.

Answer 2

"RADAR is a system that uses radio waves to determine and map the location, direction, and/or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations and terrain. A transmitter emits radio waves, which are reflected by the target and detected by a receiver, typically in the same location as the transmitter. Although the radio signal returned is usually very weak, radio signals can easily be amplified, so radar can detect objects at ranges where other emissions, such as sound or visible light, would be too weak to detect. Radar is used in many contexts, including meteorological detection of precipitation, air traffic control, police detection of speeding traffic, and by the military.

The term RADAR was coined in 1941 as an acronym for Radio Detection and Ranging. This acronym of American origin replaced the previously used British abbreviation RDF (Radio Direction Finding). The term has since entered the English language as a standard word, radar, losing the capitalization in the process."

Answer 3

RADAR is an acronym which stands for radio detection and ranging. It doesn't use sound at all. It use RF pulses and beams. It bounces a signal off of an object when it transmits and when the signal is on it's way back it is in the recieve mode. It then gets sent to a bunch of electronic equipment that figures out what that signal is etc. Trust me I work with some radar techs on my ship. SONAR uses sound, which stands for sound navigation and ranging.

Answer 4

Hi. Radar uses reflected microwaves to determine how far away something is. It does not use sound, it uses photons, but some radar installations use Doppler for detecting movement within an air mass. Sound also can have Doppler effects.