Dopplermätare
Dopplermätare, often translated as Doppler meter or Doppler device, is an instrument that utilizes the Doppler effect to measure the velocity of an object. The Doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. In the context of a Dopplermätare, this typically involves emitting a wave, such as ultrasound or radio waves, and analyzing the frequency shift of the reflected wave from a moving target.
The emitted wave strikes a moving object, and the reflected wave returns to the device. If the
Dopplermätare have a wide range of applications. In meteorology, Doppler radar is used to measure wind speed