Accession Number:

AD0655142

Title:

DESIGN SEISMIC ARRAYS FOR EFFICIENT ON-LINE BEAMFORMING

Descriptive Note:

Technical note

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Report Date:

1967-06-27

Pagination or Media Count:

40.0

Abstract:

The signal-to-noise ratio improvement obtained with delay-and-sum DS processing is discussed for short-period seismic data. It is shown that at least 3 km spacing should be maintained between seismometers at the Large Aperture Seismic Array LASA or at another site with a similar noise environment. It is shown that noise coherency measurements are of use in determining the sensor spacing at a new array location. The parameters required for a site survey coherency measurement, such as length of data and resolution, are also presented. The design of subarrays of approximately 20 km aperture is described and array patterns are given.

Subject Categories:

  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE