Nonlinear Computerized Methodology. A. Angle of Arrival Estimation. B. Data Modeling and Identification

Abstract

Multiple convolution of signals (sonar or radar) has been analyzed as a nonlinear preprocessing technique for source localization from arrays of receivers, for time-delay estimation in general, and for spectral estimation of nonstationary signals. The method has proved successful by computer simulation for many troublesome cases as a supplement to MUSIC (and its adaptations) and as a simple alternative (or representation of) the Wigner-Ville distribution. Also, a new two dimensional (image) processing method is being investigated by a transformed two-term Volterra series algorithm. The method appears promising for such applications as underwater green-laser data processing and other cases involving spatially coherent light and related nonlinear terms.

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Document Details

Document Type
Technical Report
Publication Date
Jun 10, 1991
Accession Number
ADA237564

Entities

People

  • R. R. Mohler

Organizations

  • Oregon State University

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Angle Of Arrival
  • Arrays
  • Computer Simulations
  • Convolution
  • Data Analysis
  • Data Modeling
  • Data Processing
  • Direction Finding
  • Frequency
  • High Resolution
  • Information Processing
  • Information Science
  • Power Spectra
  • Simulations
  • Spectra
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Calculus or Mathematical Analysis
  • Image Processing and Computer Vision.
  • Radar Systems Engineering.

Technology Areas

  • Directed Energy