Accession Number : ADA296708

Title :   Auto and Cross-Bispectral Analysis of Scalar and Vector Time Series: Programs, Program Descriptions, and Tests with Artificial Data.

Descriptive Note : Technical rept.,

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA

Personal Author(s) : Martineau, Gerard H. ; Briscoe, Melbourne G.

PDF Url : ADA296708

Report Date : APR 1978

Pagination or Media Count : 247

Abstract : This report describes a series of computer programs developed at Woods Hole Oceanographic Institution during 1977 to compute scalar bispectra and cross-bispectra (BISCAL), rotary bispectra and cross-rotary bispectra (BIVEC) and to display corresponding bicoherences (BPLOT) and rotary bicoherences (RBPLOT) as contour plots on the bi-frequency plane. The usual method of calculating the bispectrum in the frequency domain after using the Fast Fourier Transform is used here, and so there is a program for calculating the Fourier coefficients (FOURIER) as well as programs for organizing the data (FRAGTAP, ORDAT) or generating artificial series (GENRAN) if desired. There is also one special-purpose program which calculates line integrals of (scalar) bicoherences in the bifrequency plane along paths of constant = +w1 + w2 to determine the relative total contribution of quadratic interactions to each frequency (BISUM). (KAR) P. 246

Descriptors :   *COMPUTER PROGRAMS, *COMPUTATIONS, *TIME SERIES ANALYSIS, *FREQUENCY DOMAIN, COMPUTER PROGRAM DOCUMENTATION, INTERACTIONS, INTEGRALS, FREQUENCY BANDS, COEFFICIENTS, QUADRATIC EQUATIONS, VECTOR ANALYSIS, FAST FOURIER TRANSFORMS, PLOTTING, FOURIER SERIES, CONTOURS.

Subject Categories : Numerical Mathematics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE