ARRAY RESEARCH. GENERALIZED HORIZONTAL-VERTICAL INTERPOLATION ARRAYS

Abstract

The feasibility of using the summed output of a ring of regularly- spaced radially-oriented horizontal seismometers for estimating the output of a vertical seismometer located at the center of the ring was discussed in (Potter- Roden, 1965) for an assumed noise model consisting of isotropic single-mode Rayleigh waves. The results of that preliminary study were encouraging enough to justify a deeper investigation of the theoretical noise-reduction capabilities of planar seismic arrays containing both horizontal and vertical instruments. In the present report we wish to consider the general problem of trying to use several concentric rings of horizontals to estimate the average output of a ring of verticals (concentric with the horizontal rings) in an isotropic noise field which may contain more than one mode. The present problem reduces to that considered in P-R if (1) there is only one horizontal ring, (2) the vertical ring has radius O and contains only one seismometer, and (3) there is only one significant noise mode.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1966
Accession Number
AD0807648

Entities

People

  • Thomas F. Potter

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Amplitude
  • Arrays
  • Bessel Functions
  • Coordinate Systems
  • Earth Sciences
  • Equations
  • Frequency
  • Frequency Domain
  • Geometry
  • Infinite Series
  • Interpolation
  • Multimode
  • Numbers
  • Rayleigh Waves
  • Surface Waves
  • Transfer Functions
  • Waves

Fields of Study

  • Environmental science

Readers

  • Electrical Engineering
  • Microwave Engineering.
  • Seismology

Technology Areas

  • Space
  • Space - Hall-Effect Thruster