This program was developed for use with the ongoing
Compliant Surface Program in the Fluid Flow Group; this group
is a part of the Process Measurements Division at the National
Institute of Standards and Technology. Analogue data is collected
and digitized with an A/D converter. Having then a collection
of digitized time series which reside in the computer, this program
calculate amplitude density, autospectral (power) density and
cross-spectral density functions from these input time series.
The resulting frequency (or wavenumber) data are useful in many
engineering fields. The program is written in FORTRAN and will
run on any (286 or better) PC. The program is accompanied by a
73-page user manual and a 19-page update. The source code and
a variety of utility programs are also included. The program has
been extensively tested and the author believes it to be bug-free.
The source code is well documented and many of the techniques
employed may be found in the excellent book: Random Data, 2nd
Ed., Bendat & Piersol, Wiley, 1986.
(modified from the documentation)