Systolic Array Adaptive Beamforming

Abstract

A computing architecture which reflects the specific requirements of an optimum adaptive space-time array processor is discussed. Specifically, a frequency domain implementation of the minimum variance distortionless response (MVDR) beamformer is described. Two systolic computing arrays are presented which implement respectively a rank one update of the Cholesky factor for a spatial sensor array cross-spectral covariance matrix and the solution of a set of linear equations for the optimum array matrix filter beamformer operation. The theoretical performance of the MVDR beamformer is reviewed. Finally, an array partitioning approach permits the application of systolic MVDR beamforming to arrays with very large numbers of sensors is proposed. Two sub-optimum MVDR processes are considered which exhibit nearly optimum performance at high interference-to-noise ratios.

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Document Details

Document Type
Technical Report
Publication Date
Sep 21, 1987
Accession Number
ADA187496

Entities

People

  • Norman L. Owsley

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algebra
  • Algorithms
  • Beam Steering
  • Boundaries
  • Broadband
  • Computations
  • Computer Architecture
  • Computing System Architectures
  • Dimensionality Reduction
  • Equations
  • Estimators
  • Fabrication
  • Frequency
  • Linear Algebra
  • Signal Processing
  • Very Large Scale Integration
  • White Noise

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Statistical inference.

Technology Areas

  • Space
  • Space - Space Objects