An investigation of digital spectral analysis programs and computer methods utilized at the Naval Postgraduate School in the analysis of high frequency random signals.
investigationofd00mcke.pdf (10.38Mb)Abstract
The digitizing procedure used at the Naval Postgraduate
School was investigated for possible sources of noise and other
errors. Signals of known form were digitized through the
Analog-to Digital Hybrid computer system (Ci 5000/XDS9300) .
Similar signals were generated by digital programs on the
IBM 36O/67. The resultant signals were analyzed by the computer
programs UBCFTOR, which computed the Fourier coefficients
of each block of data, and by UBCSCOR, which computed the
power spectra of the signals. The power-spectral plots of
the computer-generated signals were compared with the power-spectral
plots of digitized signals. The analog-to-digitital
process appeared to be relatively noise free.
To further test the system, atmospheric temperature and
wind velocity signals were digitized and analyzed under
UBCFTOR and UBCSCOR. Plots of the time-varying spectra of
these signals compared favorable with results obtained at
other digitizing facilities.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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