Toeplitz Constrained Adaptive Beamforming with Auxiliary Data

Abstract

Submarine and mine detection using active sonar face similar problems when adaptive beamforming is required to provide high angular resolution or to suppress angularly isolated interferences. Both situations result in a very small amount of target-plus-interference data and a moderate amount of stationary interference only data. From this data the target-plus-interference arid interference only spatial covariance matrices (SCM's) must be estimated. When the SCM's have a Toeplitz structure, as will occur with an equi-spaced line array and plane wave propagation, beamforming performance may be improved by constraining the estimates to be Toeplitz as well.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1997
Accession Number
AD1114263

Entities

People

  • Douglas A. Abraham

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Active Sonar
  • Algorithms
  • Data Analysis
  • Data Processing
  • Detection
  • Detectors
  • Echoes
  • Estimators
  • Maximum Likelihood Estimation
  • Plane Waves
  • Signal Processing
  • Simulations
  • Target Echoes
  • Wave Interference
  • Wave Propagation
  • Waves
  • White Noise

Fields of Study

  • Engineering

Readers

  • Computer Vision.
  • Enterprise Information Systems Architecture and Joint Command Capability Interoperability Support.
  • Phased Array Antenna Design.

Technology Areas

  • Space
  • Space - Space Objects