Restoring Low Sidelobe Antenna Patterns with Failed Elements in a Phased Array Antenna

Abstract

Maintaining low spatial sidelobes, despite the failureof individual antenna elements, is important for many radar andcommunication systems utilizing phased arrays. Techniques inthe literature require accurate antenna element pattern data. Inthis paper we present a new algorithm for computing lowsidelobebeamforming which only requires the originalbeamforming weights which produce low sidelobes when allelements are functioning normally. The algorithm does notrequire accurate knowledge of the antenna element patterns, andpermits user adjustment of the trade-off between sidelobe level,taper loss, and mainbeam width. Near optimum low sidelobes aredemonstrated in several examples.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2016
Accession Number
AD1033846

Entities

People

  • Ian Weiner
  • Steven I. Krich

Organizations

  • MIT Lincoln Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Antenna Arrays
  • Antennas
  • Applied Mathematics
  • Arrays
  • Communication Systems
  • Computations
  • Doppler Radar
  • Electrical Engineering
  • Identification
  • Information Theory
  • Linear Algebra
  • Linear Arrays
  • Phased Arrays
  • Signal Processing
  • Steering
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Distributed Systems and Data Platform Development
  • Phased Array Antenna Design.