Doppler radar

"A doppler radar is a specialized radar that uses the doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of  the returned signal"

Waves show alotnof things mainly the speed and the current it is at,waves are used to show weather if the radar senses a wind gust they antenae will recieve a message saying there is an object which could be dust particles, ice crystals etc..if the object they came in contact with, the sound waves would be reflected back at an incresed frequency