Premium
The reconstruction of inhomogeneous targets from single view transient data
Author(s) -
Belkebir K.,
Catapano I.,
Geffrin J.M.
Publication year - 2008
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2008026
Subject(s) - conjugate gradient method , inverse problem , frequency domain , inverse scattering problem , inversion (geology) , permittivity , time domain , transient (computer programming) , computer science , bandwidth (computing) , nonlinear conjugate gradient method , algorithm , scattering , inverse , geology , optics , physics , mathematical analysis , mathematics , telecommunications , dielectric , geometry , gradient descent , artificial intelligence , artificial neural network , structural basin , operating system , paleontology , computer vision , optoelectronics
This paper addresses the problem of characterizing scattering systems from the knowledge of transient scattered fields measured when only one source is used to illuminate an investigating region. The inverse problem is formulated in the frequency domain rather than in the time domain and the modified 2 conjugate gradient method, which is a hybrid strategy belonging to the class of the modified conjugate gradient approaches, is exploited to retrieve the unknown permittivity and/or conductivity profiles. The aim of the paper is to investigate how the reconstruction capabilities of the adopted inversion procedure may be improved by acting on the characteristic parameters of the incident pulse that is its central frequency and bandwidth. In order to provide a preliminary analysis, experimental data corresponding to inhomogeneous two‐dimensional objects embedded into a homogenous medium are processed.