Accession Number:

AD0745175

Title:

An Investigation of Digital Spectral Analysis Programs and Computer Methods Utilized at the Naval Postgraduate School in the Analysis of High Frequency Random Signals.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

• McKendrick,John DeMille

Report Date:

1972-03-01

Pagination or Media Count:

147.0

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 throught the Analog-to-Digital Hybrid computer system Ci 5000XDS9300. Similar signals were generated by digital programs on the IBM 36067. 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-digital process appeared to be relatively noise free. Author

Descriptors:

• *INFORMATION THEORY
• *TIME SERIES ANALYSIS
• SPECTRUM ANALYZERS
• DATA PROCESSING
• SAMPLING
• POWER SPECTRA
• INTEGRAL TRANSFORMS
• DIGITAL COMPUTERS
• ANALOG TO DIGITAL CONVERTERS
• ELECTRIC FILTERS
• WHITE NOISE
• PROBABILITY DENSITY FUNCTIONS
• COMPLEX VARIABLES
• CURVE FITTING
• RANDOM VARIABLES
• THESES

Subject Categories:

• Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE