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A computer program for estimating the power-density spectrum of advanced continuous simulation language generated time historiesA computer program for performing frequency analysis of time history data is presented. The program uses circular convolution and the fast Fourier transform to calculate power density spectrum (PDS) of time history data. The program interfaces with the advanced continuous simulation language (ACSL) so that a frequency analysis may be performed on ACSL generated simulation variables. An example of the calculation of the PDS of a Van de Pol oscillator is presented.
Document ID
19810017163
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Dunn, H. J. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1981
Subject Category
Computer Programming And Software
Report/Patent Number
NASA-TM-83120
L-14217
Report Number: NASA-TM-83120
Report Number: L-14217
Accession Number
81N25699
Funding Number(s)
PROJECT: RTOP 505-34-33-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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