The Effect of the Conventional Beampattern on Adaptive Beamformer Performance

Abstract

This report develops an expression that relates the adaptive beamformer array response function to the conventional beamformer beampattern function in the sidelobe region. Specific examples for deterministic, randomized, and random arrays are evaluated. These examples clearly indicate that sidelobes in the conventional beampattern function produce spurious peaks in the adaptive array response. The probability that a spurious peak exceeds a threshold for the adaptive array response of random arrays is developed. The probability tha a signal peak exceeds that peak spurious peak for minimum-energy adaptive beamforming with random arrays is developed. Keywords: Spurious peak; Array response; Random arrays; Adaptive arrays.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1988
Accession Number
ADA204682

Entities

People

  • D. F. Gingras
  • J. C. Lockwood
  • S. K. Lapic

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Angle Of Arrival
  • Detection
  • Distribution Functions
  • Eigenvalues
  • Eigenvectors
  • Equations
  • Estimators
  • High Resolution
  • Noise
  • Plane Waves
  • Probability
  • Probability Density Functions
  • Random Variables
  • Sidelobes
  • Signal Detection
  • Signal Processing
  • Steering

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Statistical inference.