Dopplertehnika
Dopplertehnika refers to a family of techniques based on the Doppler effect, the change in frequency of a wave relative to the motion of its source or observer. These methods rely on transmitting waves—such as sound, light, or radio—and detecting the frequency shift of the waves after interaction with moving targets or scattering structures. The observed Doppler shift is proportional to the velocity component along the line of sight and depends on the angle between the wave direction and the motion.
In medical imaging, Doppler ultrasound is a widely used modality for assessing blood flow in vessels and
Radar and lidar applications use Doppler techniques to measure the velocity of moving objects. Doppler radar
In astronomy and spectroscopy, Doppler shifts of spectral lines reveal the radial velocities of stars and galaxies,
Historically named for Christian Doppler, the technique spans science and engineering, providing a noncontact means to