Title :
Inverse 2D obstacle scattering by adaptive iteration
Author :
Haas, M. ; Lehner, G.
Author_Institution :
Inst. fur Theor. der Elektrotech., Stuttgart Univ., Germany
fDate :
3/1/1997 12:00:00 AM
Abstract :
The 2D inverse time harmonic electromagnetic scattering problem of reconstructing the starlike boundary Λ of an infinitely conducting obstacle from its far field scattering data is considered. An approach that employs weak a priori knowledge by choosing an auxiliary curve Γ inside the searched boundary Λ is used. Reconstructions are improved using an iteration scheme to adapt the internal curve Γ by exploiting information on the reconstruction Λ of the previous step. The adaptation algorithm yields significant improvements on Λ, provided a reasonable first reconstruction may be obtained
Keywords :
boundary integral equations; boundary-elements methods; electromagnetic wave scattering; inverse problems; iterative methods; 2D inverse time harmonic scattering; adaptation algorithm; adaptive iteration; electromagnetic scattering problem; far field scattering data; infinitely conducting obstacle; reconstruction; searched boundary; starlike boundary; Acoustic scattering; Boundary element methods; Boundary value problems; Conductors; Electromagnetic scattering; Integral equations; Inverse problems; Numerical simulation; Polarization; Surface waves;
Journal_Title :
Magnetics, IEEE Transactions on