| 摘要 |
FIELD: analogue time signal processing. ^ SUBSTANCE: method is based on the input signal conversion using a linear analogue converter, direct Fourier transformation resulting in the amplitude and phase spectrums, and inverse Fourier transformation. Additionally, after the direct Fourier transformation, correction of the amplitude spectrum is carried out by multiplying it by correction factors calculated as a ratio of the set rated amplitude and frequency response of the converter to its actual amplitude and frequency response, and correction of the phase shift is carried out by performing an additional phase shift calculated as the difference of the phases corresponding to the set rated phase-frequency response and the phases contained in the phase spectrum, and added to the latter. ^ EFFECT: increase in accuracy and expansion of frequency range. ^ 1 dwg |
