Comparison of Two Segment Maximum Likelihood (TSML) Frequency Wavenumber Spectra with the Fast Beamed Frequency Wavenumber Spectra (FKPLOT)

Abstract

Empirical comparison of the two segment maximum likelihood f-k spectra with fast frequency domain beam f-k spectra (FKCOMB), FKPLOT) shows that the latter is more suitable for the separation of multiple signals if the amplitudes of the signals differ considerably. This advantage of the beaming process is attributed primarily to the stripping procedure, which has not been developed for the maximum likelihood spectra. The maximum likelihood f-k spectra, on the other hand, are less sensitive to the array response and easier to interpret, especially if the array used contains only a few elements, since the sidelobes of the array response are more confusing on the FKCOMB output of this case.

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Document Details

Document Type
Technical Report
Publication Date
May 09, 1974
Accession Number
ADA003481

Entities

People

  • J. W. Lambert
  • Z. A. Der

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Amplitude
  • Central America
  • Computations
  • Contracts
  • Data Analysis
  • Detectors
  • Doppler Effect
  • Frequency
  • Frequency Domain
  • High Resolution
  • Plane Waves
  • Rayleigh Waves
  • Seismic Arrays
  • Spectra
  • Surface Waves
  • Virginia
  • Waves

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  • Phased Array Antenna Design.
  • Seismology
  • Statistical inference.