Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Principle of signals processing of vibration in optical measuring instruments of vibratory displacement Venediktov A.Z., Palchik O.V. The article deals with the problem of measurement processing and analysis of vibratory displacement signals, obtained with the usage of optical vibrometers, constructed on the principle of laser triangulation. The procedure of allocation of spectrum trend, which is under threshold processing is laid in the basis of the method of analysis of vibration signal.