Subtitles section Play video Print subtitles Radio Detection And Ranging (RADAR) works by broadcasting radio waves out and then detecting reflections off of objects. The time it takes the signal to return tells us the distance, and the Doppler shift tells how fast the object is moving relative to us.
A2 radar radio doppler broadcasting detecting detection Radar explained in ten seconds 3 0 林宜悉 posted on 2020/03/28 More Share Save Report Video vocabulary