Algorithm Investigation for Large Adaptive Arrays.

Abstract

This report examines the influence of surplus antenna elements in an adaptive array. It is demonstrated that the judicious placement of a few extra antenna elements provides significant performance improvement. In particular, the speed of convergence is improved, and the quality of the antenna beam pattern is enhanced. Convergence rates and beam patterns are closely related to the eigenvalues of the antenna/signal system. A closed form expression is derived for the eigenvalues of a general antenna array with two jammers. From this, expressions for the convergence rate and the optimum beam pattern are found. Computer simulations are used to verify the theoretical developments concerning convergence rates and final beam patterns for a variety of element configurations. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1980
Accession Number
ADA089753

Entities

People

  • B. Widrow
  • H. Mesiwala
  • K. Duvall
  • P. Titchener
  • R. Gooch

Organizations

  • Stanford University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adaptive Filters
  • Antenna Arrays
  • Antenna Configurations
  • Antennas
  • Arrays
  • Computer Simulations
  • Eigenvalues
  • Eigenvectors
  • Frequency
  • Geometry
  • Linear Arrays
  • Plastic Explosives
  • Power Levels
  • Simulations
  • Three Dimensional
  • Triangles
  • White Noise

Fields of Study

  • Engineering

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Linear Algebra