A Nonlinear Programming Algorithm for Optimizing Conventional Beamformer Shading Weights

Abstract

A numerical method to determine the optimal shading weights for a conventional delay-and-sum beamformer has been developed. The method employs a maximization of the deflection coefficient under the constraint of maintaining signal gain. This provides an optimal array shading scheme based on available noise data. The algorithm has been implemented using off-the-shelf numerical methods that are applicable only for small arrays. For large arrays, a special-purpose optimization algorithm has been developed. The performance of the algorithms on measured test array data is included to show the level of performance improvement.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 2003
Accession Number
ADA419270

Entities

People

  • Charles M. Traweek
  • John P. Casey
  • Thomas Wettergren

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Coefficients
  • Computer Programming
  • Computer Programs
  • Computers
  • Cross Correlation
  • Deflection
  • Detection
  • Detectors
  • Frequency
  • Frequency Bands
  • Graphical User Interface
  • Nonlinear Programming
  • Operating Systems
  • Optimization
  • Systems Engineering
  • Undersea Warfare

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.