Instantaneous Power Spectrum
By: Paulo M. D. Monica de Oliveira
Contributors: Naval Postgraduate School (U.S.)
Published: 1989
Place of publication: Monterey, California
Language: eng
Number of pages: 89
Subjects: Signal processing; Sensitivity; Power spectra; Signals; Theses; Frequency; Computer Programming and Software; Test and evaluation; Resolution; Theoretical Mathematics
Description: The need for tools capable of handling non-stationarities in the spectral content of the data was recognized as early as 1946. The Wigner-Ville Distribution (WD) has been extensively used since its introduction in 1948, but suffers from some associated problems (e.g., spectral cross-terms and requiring the use of analytic signals). An alternative Distribution is proposed, which has its origin in the definition proposed by Page of 'Instantaneous Power Spectrum' (IPS). Its characteristics are examined and, when pertinent, compared to the WD. It is shown to be less sensitive to the problems afflicting the WD, but provides less frequency resolution. The usefulness of a parametric (AR) version is investigated. Some typical test signals are examined, to demonstrate the performance and trade-offs of IPS and its parametric version.
Notes: Thesis advisor(s): Hippenstiel, Ralph D.

"March 1989."

Thesis (M.S. in Electrical Engineering and Electrical Engineer)--Naval Postgraduate School, March 1989

Includes bibliographic references: (p. 85-87).

"Approved for public release, distribution unlimited"--Cover.

Portuguese Navy author.

MAW  03/04/2009.