Title :
Inverse-scattering methods for three-dimensional targets buried in the lossy earth
Author :
Cui, T.J. ; Chew, W.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
New diffraction tomographic (DT) algorithms for imaging three-dimensional (3D) buried objects are presented using electric and magnetic dipoles as transmitters and receivers, respectively, where the air-earth interface is taken into account. A general asymptotic formulation is developed to evaluate the Sommerfeld integrals, which is valid for any buried depth and measurement height. These algorithms are directly derived based on a lossy background and can be used by lower-frequency systems, from which objects deeply buried in the earth can be detected. Reconstruction examples are given to show the validity of these algorithms.
Keywords :
absorbing media; buried object detection; electromagnetic wave scattering; image reconstruction; image resolution; integral equations; inverse problems; magnetic moments; 3D buried objects imaging; Sommerfeld integrals; air-earth interface; buried depth; diffraction tomographic algorithms; electric dipoles; general asymptotic formulation; high spatial-resolution imaging; inverse-scattering methods; lossy background; lossy earth; lower-frequency systems; magnetic dipoles; measurement height; object reconstruction; receivers; three-dimensional buried targets; transmitters; Antenna measurements; Buried object detection; Earth; Electromagnetic scattering; Fourier transforms; Geophysical measurements; Geophysics computing; Magnetic field measurement; Tomography; Transmitters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874588
