Pulsed laser - rangefinder for heterodyne measurement value acquisition

摘要

P optical range finder comprising a pulsed laser, whose radiation is collected, after reflection on a target, a local oscillator emitting a luminous radiation at a frequency close to that of the pulsed laser, a mixer and a photodetector supplying a signal to the beat frequency, and a processing circuit which supplies the distance between the target and the apparatus on the basis of this signal. / p & & p & it is provided, according to the invention, a second mixer connected to the remainder of the pulsed laser, a separator in order to extract a portion of the radiation emitted by the local oscillator and directed towards the second mixer and a second processing circuit supplying the speed of the target from the output signal from the photodetector. / p