LARGE-ARRAY SIGNAL AND NOISE ANALYSIS. NOISE SUPPRESSION BY LONG-PERIOD INFINITE-VELOCITY PROCESSORS

Abstract

Various infinite-velocity processing schemes were applied to two long-period noise samples recorded at the Montana LASA on 2 and 3 December 1966. Straight summation, multichannel signal extraction with an infinite-velocity signal model, and multichannel prediction filtering were applied to the presence of ambient noise. From the comparision of the various processing schemes, the 9- element array using multichannel filtering was found to be more effective than any straight summation for separating P-wave signals or surface modes widely separated from the noise and very nearly as effective as the 12-channel MCF.

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Document Details

Document Type
Technical Report
Publication Date
Aug 07, 1968
Accession Number
AD0839119

Entities

People

  • Wayne Wilkins

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Classification
  • Contracts
  • Extraction
  • Filters
  • Filtration
  • Frequency
  • Government (Foreign)
  • Instructions
  • Multichannel
  • Noise
  • Noise Reduction
  • Power Spectra
  • Rejection
  • Security
  • Spectra
  • Statistics

Fields of Study

  • Engineering

Readers

  • Acoustics.
  • Approximation Theory.
  • Seismology