The Effect of the Number and Spacing of Elements on the Efficiency of LASA Beams: Supplement

Abstract

A previous report described the average signal loss, rms noise reduction, and S/N gain produced by beam-forming eight teleseismic events two different ways. After publication of the report the analysis was extended to include beams containing 17 channels (delta greater than or equal to 12 km), 34 (delta greater than or equal to 6 km), 68 (delta greater than or equal to 3.5 km), and 119 channels (delta greater than or equal to 3.0 km). The study was still further extended by forming LASA beams containing 336 traces (delta greater than or equal to 1 km) derived from the 21 subarrays. In these beams, outputs from sensors in the 'B' and 'C' rings of each subarray (a total of 9 per subarray) were not used.

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Document Details

Document Type
Technical Report
Publication Date
Nov 21, 1968
Accession Number
AD0844582

Entities

People

  • Royal A. Hartenberger

Organizations

  • Teledyne Technologies

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Beam Forming
  • Contractors
  • Contracts
  • Detection
  • Detectors
  • Efficiency
  • Export Controls
  • Exports
  • Government (Foreign)
  • Governments
  • Noise
  • Noise Reduction

Fields of Study

  • Physics

Readers

  • Mathematics or Statistics
  • Phased Array Antenna Design.
  • Seismology

Technology Areas

  • Space