Vestnik metrologa

The article presents the results of studies of the informativeness of determining the parameters of acoustic fields of objects by measuring or monitoring them. It is substantiated that the informativeness of determining the parameters of acoustic fields of objects under operating conditions depends on the measurement error and the reliability of monitoring the parameters in the area of propagation of acoustic fields. It is shown that the informativeness of determining the parameters of acoustic fields of objects is of current importance for ensuring the effectiveness of protecting objects from speech information leakage, acoustic secrecy and acoustic detection of objects. The article presents generalized information on the developed recommendations for improving and developing methods and means for measuring (monitoring) the parameters of acoustic fields of objects.

He article proposes a method for calibrating aviation laser coordinate measuring scanning systems based on the use of three-dimensional reference structures ("test objects"). The purpose of the calibration is to reduce the measurement error of high-precision aviation laser coordinate measuring scanning systems in terms of determining the coordinates of reflection points and measuring the geometric dimensions of ground objects. The developed method makes it possible to reduce the measurement error of aviation scanning systems by values from 10 to 30%, depending on the flight altitude.

A mathematical model of reference radar reflectors is presented, and its convergence with analytical calculations and experimental data in the resonant frequency domain is verified.