On the Diffusion Matrix of Radiative Transfer

Abstract

The diffusion matrix, formerly derived with the stochastic model of radiative transfer, is derived using auxiliary equations in conjunction with the Milne integral equations. Also derived is the extension concerning the Neumann solution as given by Busbridge. In the case of diffuse reflection and transmission of parallel rays, the solutions are expressed in terms of a pair of scattering and transmission functions for each of the two boundaries of the atmosphere. These global functions are given by X and Y functions that are equal to those previously found by Bellman and Kalaba. Whereas the diffusion matrix formally has a somewhat similar appearance to a map yielded by Preisendorfer, the mathematical development is different. If the optical properties of the medium are constant throughout the atmosphere, the reflectance and transmittance operators reduce to those given by Sobolev.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 09, 1961
Accession Number
AD0257815

Entities

People

  • Sueo Ueno

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Atmospheres
  • Boundaries
  • Coherent Scattering
  • Differential Equations
  • Diffuse Reflection
  • Equations
  • Integral Equations
  • Integrals
  • Optical Properties
  • Probability
  • Radiation
  • Radiative Transfer
  • Random Walk
  • Reflectance
  • Reflection
  • Scattering
  • Transmittance

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering