employee
Moscow, Russian Federation
UDC 53.088.6
CSCSTI 90.27
This paper describes methods for improving the accuracy of measurements of angular spherical coordinates by mobile coordinate measuring instruments (MKS). Methods of processing research results on an optoelectronic complex related to the metrological support of circular horizontal and vertical measuring systems of the ICSI are presented. The methods of processing the results of research on the error of electronic total stations using discrete Fourier transforms, affine transformations and an artificial neural network have improved the accuracy of measurements of horizontal and vertical angles on an optoelectronic complex for testing, verification and calibration of ICSI. At the same time, it is noted that the use of a specific measurement results processing technique depends on the research objective. It is noted that in the case of orthogonality of the axes of the rotary table and the prism of the horizontal plane, when checking the ICSI, it is sufficient to use the affine transformation method, since here the influence of the eccentricities of the ICSI location above the prism and the prism itself on the rotary table is automatically eliminated. If the research results are not acceptable, then a technique for processing research results using harmonic analysis based on the discrete Fourier transform can be used, which allows you to analyze the measurement results, identify what the measurement errors relate to (comparator or ICSI), after which a decision is made to eliminate the corresponding harmonics (a regression line can be constructed, characterizing the systematic measurement error of the ICSI).
optical-electronic complex, mobile coordinate measuring instruments, discrete Fourier transform, affine transformations, artificial neural network, eccentricities
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