Time-Domain Deconvolution Removes the Effects of Near-Field Scatterers

Abstract

This paper studies a deconvolution problem that models the removal of interference caused by objects in the near field of antennas. Such interference affects antennas on complicated objects, such as ships and aircraft. Infinitely many time-domain deconvolution algorithms are considered here, of which the best one -- being stable and O(h2) accurate, and O(h4) accurate after Richardson extrapolation -- may compete with : Fourier and Laplace methods. Special care is taken to find an algorithm that accommodates discontinuity-related numerical noise in finite-difference-time-domain data.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1998
Accession Number
ADA361850

Entities

People

  • Thomas M. Roberts

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Carrier Frequencies
  • Computations
  • Discontinuities
  • Equations
  • Extrapolation
  • Finite Difference Time Domain
  • Frequency
  • Integral Equations
  • Linear Systems
  • Military Research
  • Near Field
  • Scattering
  • Time Domain
  • Volterra Equations

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Wave Propagation and Nonlinear Chaotic Dynamics.