NASA NTRS · 19810000373
Computing the Power-Density Spectrum for an Engineering Model
Abstract
Computer program for calculating of power-density spectrum (PDS) from data base generated by Advanced Continuous Simulation Language (ACSL) uses algorithm that employs fast Fourier transform (FFT) to calculate PDS of variable. Accomplished by first estimating autocovariance function of variable and then taking FFT of smoothed autocovariance function to obtain PDS. Fast-Fourier-transform technique conserves computer resources.
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Dunn, H. J.. 1982-12-01. Computing the Power-Density Spectrum for an Engineering Model. https://ntrs.nasa.gov/citations/19810000373
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