Robust Technology of Harmonic Analysis
The spectral analysis of random processes or the measurement of the value of spectral functions which are the frequency distribution of the energy characteristics of the process is the most important part of the statistical measurements. At first spectral analysis was used for solving the problem of the investigation of the characteristics of deterministic processes in contrast to the analysis of the distribution functions and correlation analysis which were formed directly as a type of statistical measurement. Spectral analysis became an independent branch only after the role of the theory of measurement of the probability characteristics of random processes as well as the need for apparatus analysis of random processes had increased
KeywordsSpectral Analysis Spectral Density Harmonic Analysis Fourier Series Random Process
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