Multispectral Backscattering: A Fractal-Structure Probe

Abstract

We present numerical results for backscattering of electromagnetic waves by fractal aggregates of fractal dimension < 2. Single-scattering analytical result shows that Fourier transform of the density-density mass correlation function of the scatterer is the main contribution of the backscattering cross-section wavelength variation when wavelength is in the fractal range of the scattering object. This allows to conjecture that multispectral backscattering analysis could be used to measure the geometrical fractal dimension of the scatterer. Illustrative results are given by using several recently proposed numerical scattering codes accounting for multiple scattering. Applications to lidar experiments in the visible range are briefly discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADP010897

Entities

People

  • Pascal Rannou
  • Robert Botet

Organizations

  • Laboratory of Solid State Physics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Backscattering
  • Coefficients
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Dispersing
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Equations
  • Forward Scattering
  • Grain Size
  • Materials
  • Mie Scattering
  • Refractive Index
  • Scattering

Fields of Study

  • Physics

Readers

  • Aerospace Propulsion Engineering.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Theoretical Analysis.