A Conjugate Gradient Based Algorithm to Minimize the Sidelobe Level of Planar Arrays with Element Failures

Abstract

Element failures increase the sidelobe power level of an array. Reconfiguring the amplitude and phase of the remaining elements can partially compensate for the failed elements and thus reduce the sidelobe level. The result of this investigation is an algorithm that yields the reconfigured distribution by minimizing the ratio of the average peak sidelobe power level to the power in the mainbeam, taking into account the defective elements. The minimization of this nonlinear function is carried out via a conjugate gradient method. The algorithm is applied to the synthesis of sum and difference patterns of planar arrays.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1991
Accession Number
ADA240667

Entities

People

  • T. J. Peters

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Amplitude
  • Arrays
  • Classification
  • Computations
  • Corporations
  • Excitation
  • Geometry
  • Iterations
  • Linear Systems
  • Peak Values
  • Power Levels
  • Procedures (Computers)
  • Security
  • Space Systems
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Linear Algebra
  • Phased Array Antenna Design.