Pulsed laser - rangefinder for heterodyne measurement value acquisition

摘要

P optical range finder comprising a pulsed laser, whose radiation is reflected by a target, a local oscillator to continuous emission of a frequency close to that of the laser, a mixer receiving the reflected radiation and that of the local oscillator and a photodetector delivers a signal called beating reflection which is applied to a stopwatch for the determination of the distance of the target. / p & & p & it is provided, according to the invention, a separator in order to extract a portion of the energy emitted by the pulsed laser and direct it towards the mixer means connected to said detector to be stored before the return of the reflected radiation the beat signal emission thus obtained, and means for making the beat signal transmission and the beat signal reflection, the resulting signal being applied to the chronometer. / p