Accession Number:

ADA208472

Title:

Instantaneous Power Spectrum

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1989-03-01

Pagination or Media Count:

99.0

Abstract:

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. Keywords Signal processing. Theses.

Subject Categories:

  • Theoretical Mathematics
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE