Title :
A local shape function (LSF) method for time-domain inverse scattering
Author :
Weedon, W.H. ; Chew, W.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
June 28 1993-July 2 1993
Abstract :
The authors present a novel LSF inverse scattering algorithm for time-domain inverse scattering. The method is derived by using a T-matrix formulation and interpreting the results in the time domain. A finite-difference time-domain (FDTD) forward solver along with a volumetric boundary condition is used to generate the forward scattering data and Frechet derivative and transposed operators. In this manner, the inverse scattering problem may be solved with only three calls to a FDTD forward solver per iteration. Some preliminary results of the application of this technique are shown.<>
Keywords :
electromagnetic wave scattering; finite difference time-domain analysis; inverse problems; iterative methods; mathematical operators; matrix algebra; FDTD forward solver; Frechet derivative; T-matrix formulation; finite-difference time-domain; iteration; local shape function; time-domain inverse scattering; transposed operators; volumetric boundary condition; Boundary conditions; Equations; Finite difference methods; Forward contracts; Inverse problems; Iterative methods; Nonlinear distortion; Scattering; Shape; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385293
