Inverse Scattering Of Buried Inhomogeneous Biaxial Dielectric Cylinders Coated On A Conductor

The inverse scattering of buried inhomogeneous biaxial dielectric cylinders coated on a conductor with known cross section is investigated. Dielectric cylinders with known cross section coated on a conductor of unknown permittivities are buried in one half space and scatter a group of unrelated waves incident from another half space where the scattered field is recorded. By proper arrangement of the various unrelated incident fields, the difficulties of ill-posedness and nonlinearity are circumvented, and the permittivity distribution can be reconstructed through simple matrix operations. The algorithm is based on the moment method and the unrelated illumination method. Numerical results are given to demonstrate the capability of the inverse algorithm. Good reconstruction is obtained both with and without Gaussian noise in measured data. In addition, the effect of noise on the reconstruction result is also investigated. (C) 2008 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 18, 228-236, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ima.20133