Extended Array Evaluation Program. Special Report No. 15. Evaluation of an Adaptive Three-Component Filter

Abstract

The three-component adaptive filter takes advantage of the phase relations between radial, vertical, and tangential seismometer traces which hold when Rayleigh and Love waves are present. This study finds that adaptively processed data has up to 6 dB greater signal-to-noise ratio than simple bandpassed data. The detection threshold for single site data is lowered by an amount consistent with this gain, but the detection threshold for beam data is unchanged. An explanation for this difference, based on the character of single site and beam noise fields, is presented. Azimuthal discrimination and response of the filter to random noise are investigated.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1973
Accession Number
AD0783607

Entities

People

  • Stephen S. Lane

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adaptive Filters
  • Air Force
  • Bandpass Filters
  • Detection
  • Detectors
  • Discrimination
  • False Alarms
  • Filters
  • Filtration
  • Frequency
  • Love Waves
  • Probability
  • Rayleigh Waves
  • Surface Waves
  • Test And Evaluation
  • Warning Systems
  • Waves

Readers

  • Radar Systems Engineering.
  • Seismology