A Generalized Sidelobe Cancelling Structure for Adaptive Arrays

Abstract

This report introduces a new formulation, termed generalized sidelobe cancelling (GSC), for adaptive arrays. This formulation offers an alternative method or implementing older adaptive structures, as well as a method usable in formulating a new, wider class of adaptive beamformers. The GSC approach provides an implementation advantage in that the conventional beamformer is separated out as a distinct element in the overall processor. In addition, the linear constraints which ensure the absence of distortion in the main array lobe can be implemented as simple analog hardware elements. This approach is in contrast to previous approaches in which the constraints have been incorporated into the adaptive algorithm. Another advantage of the GSC formulation is that it clearly delineates the similarities and differences between P-vector and linearly constrained adaptive beamforming. To assess further the performance characteristics of adaptive processing of HF radar data, the GSC beamformer was used to study data collected at the Wide Aperture Research Facility operated by SRI International. Findings of this study are included.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA074899

Entities

People

  • Charles W. Jim
  • Lloyd J. Griffiths

Organizations

  • SRI International

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Classification
  • Colorado
  • Data Sets
  • Delay Lines
  • Distortion
  • Dwell Time
  • Electrical Engineering
  • Engineering
  • Failure Mode And Effect Analysis
  • Filters
  • Frequency
  • Rejection
  • Research Facilities
  • Security
  • Steady State

Fields of Study

  • Engineering

Readers

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  • Phased Array Antenna Design.