Laser Doppler Principle is used by Laser Surface Velocimeters (LSVs) to assess the laser light that is scattered back from a moving object. The LSVs from Polytec feature advanced detection circuits ...

Police radar works on the Doppler principle; a change in the frequency of a signal in direct proportion to the speed of an object. The Doppler principle was discovered in 1842 by an Austrian physicist ...

If you’ve ever cast your eyes towards experimenting with microwave frequencies it’s likely that one of your first ports of call was a cheaply-available Doppler radar module. These devices usually ...

THE object of associating these principles has been to make possible the measurement of the velocity of any phenomenon which will reflect, refract or diffract a laser beam. Our particular interests ...

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