Sirotskii

This article deals with increase in accuracy of positional (photo-electric) laser measuring systems. Amplitude instability of laser radiation represents the most significant part of total measurement error. A method for introducing feedback on intensity of laser radiation into the structure of a laser measuring system was proposed; this feedback allows one to stabilize the measuring system parameters. Introduction of this feedback was provided by mounting an additional photoreceiver which registers the reflected laser beam; a signal from the photoreciever is used for correction of information received from the main measuring channel.