Efficient Computation of Array Patterns

Abstract

The impact of a symmetrical array geometry, the use of quantized stored cosine function, the exploitation of digital Fourier transform algorithms, and the application of trigonometric interpolation in the computation of array patterns is discussed. Careful selection of parameters permits sampling the array pattern only 6% above the theoretical Nyquist limit. Reconstruction of array patterns showing -20, -30, and -40 -dB relative interpolation errors are presented. A saving of 8000:1 in computation time over direct 'brute-force' array-pattern computation is illustrated for a hypothetical array.

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Document Details

Document Type
Technical Report
Publication Date
Aug 30, 1976
Accession Number
ADA041548

Entities

People

  • Victor C. Anderson

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computations
  • Computers
  • Delta Functions
  • Engineering
  • Frequency
  • Geometry
  • Instrumentation
  • Military Research
  • Naval Warfare
  • Navy
  • New York
  • Oceanography
  • Power Spectra
  • Security
  • Signal Processing
  • Test And Evaluation
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Approximation Theory.
  • Computer Vision.
  • Phased Array Antenna Design.