Direct Computation of Power Density and Energy Density Spectra.

Abstract

Direct methods which use finite discrete Fourier transforms in the computation of both power and energy density spectra are examined. The methods are shown to be applicable to most physically realizable processes. The 'intrinsic' windows involved in the methods and the variance of the resulting estimates are discussed. A generalized smoothing technique is developed which significantly reduces the variance of the estimates and greatly suppresses leakage from side lobes. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 11, 1970
Accession Number
AD0723185

Entities

People

  • William B. Moseley

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computations
  • Diffraction
  • Discrete Fourier Transforms
  • Fourier Transformation
  • Integral Transforms
  • Mathematics
  • Spectra

Readers

  • Approximation Theory.
  • Educational Psychology