Part 2: The Physics: From Maxwell to the Forward Model

Chapter 5: Electromagnetic Scattering Theory

Intermediate~180 min

Learning Objectives

  • Derive the scalar and vector Helmholtz equations from time-harmonic Maxwell's equations
  • Construct free-space Green's functions in 2D and 3D and explain the Sommerfeld radiation condition
  • Formulate the Lippmann-Schwinger volume integral equation for electromagnetic scattering
  • Derive the Born approximation and state its validity conditions quantitatively
  • Compare Born and Rytov approximations and identify when each is appropriate
  • Describe iterative methods (BIM, DBIM, CSI) for nonlinear inverse scattering
  • Compute the scattering matrix and far-field pattern, and state the optical theorem

Sections

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