THE WORKING STANDARDS OF THE 2-nd ACCURACY FOR MEASURING HYDROPHONES CALIBRATION. WAYS OF THE METROLOGICAL CHARACTERISTICS IMPROVEMENT

摘要

The results of work on creation of the automated working standard of the 2-nd accuracy of new generation are presented. The principles of construction, technical characteristic, methods of calibration and operation routines are considered in the report. A number of means and technical decisions which have allowed to improve metrological characteristic and operational qualities of the standard are presented. The question of optimization of system of transmitting and measuring tracts, way of "free field calibration' frequency range extension to lower frequencies in water tank with limited wave sizes, way of elimination of hydrophone "shadow" effect, way of synphase interference compensation, and number of others are discussed.