MULTITAPER ESTIMATES OF THE POWER SPECTRUM OF STOCHASTIC TIME SERIES USING FLICKER-NOISE SPECTROSCOPY
- Details
- Category: Uncategorised
- Published: Sunday, 04 April 2021 20:31
- Written by Administrator
- Hits: 1983
Volume 6 (2), April 2021, Pages 49-58
Rabia Nadjafkulieva
Senior lecturer, Department of “Engineer and Computer Graphics”, Azerbaijan State Oil and Industry University, Dissertant, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Аннотаци
Spectral analysis of stochastic time series, based on the Fourier transform of the correlation function, is one of the frequently used phenomenological approaches to the study of dynamic processes with noise. The paper proposes a computational procedure for constructing multitaper spectral estimates of a noisy non-stationary time series using the flicker-noise spectroscopy method for the irregular component of the series. The procedure is implemented on the example of calculating the maximum stress in a heat exchanger used at a gas lift compressor station. The calculation results are compared with the results of the numerical solution of the problem of free oscillations of the apparatus tubes, excited by periodic aerodynamic forces and modeled by a linear partial differential equation.
Ключевые слова: heat exchanger, selection, flicker noise spectroscopy, multitaper spectral evaluation.