Maximum Likelihood Estimation of the Position of a Radiating Source in a Closed Waveguide.

Abstract

An array of sensors is receiving radiation from a source of interest. The source and the array are in closed three dimensional waveguide. The maximum-likelihood estimators of the coordinates of the source are analysed under the assumptions that the noise field is Gaussian, and the source lies on a finite linear manifold spanned by a set of orthogonal functions. These functions are the eigen-functions of the wave operator given the boundary conditions defining the waveguide, and are called normal modes. The Cramer-Rao lower bound is of the order of the number of modes which define the source excitation function. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1977
Accession Number
ADA042452

Entities

People

  • Melvin J. Hinich

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Arrays
  • Boundaries
  • Coherent Radiation
  • Coordinate Systems
  • Eigenvalues
  • Eigenvectors
  • Equations
  • Estimators
  • Frequency
  • Frequency Bands
  • Maximum Likelihood Estimation
  • Physics
  • Radiation
  • Three Dimensional
  • Wave Equations
  • Waveguides

Fields of Study

  • Engineering

Readers

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  • Linear Algebra