eprintid: 376 rev_number: 7 eprint_status: archive userid: 5 dir: disk0/00/00/03/76 datestamp: 2011-07-27 lastmod: 2013-07-04 11:17:26 status_changed: 2013-07-04 11:17:26 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Franceschini, Gabriele creators_name: Donelli, Massimo creators_name: Franceschini, Davide creators_name: Benedetti, Manuel creators_name: Rocca, Paolo creators_name: Massa, Andrea title: Reconstruction of Dielectric Objects from Amplitude - Only Data – Advantages and Open Problems of a Two-Step Multi-Resolution Strategy ispublished: pub subjects: TU full_text_status: public abstract: In the following contribution an innovative strategy for the inversion of amplitude only data in microwave imaging applications is presented. The method consists of two steps. At the first step the source is synthesized in order to compute the incident field in the investigation domain. In the second step the profile of the object is reconstructed thanks to the iterative multi scaling approach combined to the Particle Swarm Optimiser, an innovative and effective evolutionary minimization technique. The effectiveness of the algorithm is preliminary assessed through the inversion of experimental data concerning an inhomogeneous dielectric scatterer. date: 2011-01 date_type: published institution: University of Trento department: informaticat refereed: FALSE referencetext: [1] O. M. Bucci, and G. Franceschetti, "On the degrees of freedom of scattered fields h, IEEE Trans. Antennas Propagat., vol. 37, pp. 918-926,1989. [2] O. M. Bucci and T. Isernia, "Electromagnetic inverse scattering: retrievable information and measurements strategies" Radio Science, pp. 2123-2138, 1997 [3] E. Wolf, "Determination of the amplitude and the phase of the scattered fields by holography," J. Opt. Soc. Am. A, vol. 60, pp. 18-20, 1970. [4] G. W. Faris and H. M. Hertz, "Tunable differential interferometer for optical tomography," Appl. Opt., vol. 28, pp. 4662-4667, 1989. [5] S. Caorsi, A. Massa, M. Pastorino, and A. Randazzo, "Electromagnetic detection of dielectric scatterers using phaseless synthetic and real data and the memetic algorithm," IEEE Trans. Geosci. Remote Sensing, vol. 41, pp. 2745-2753, Dec. 2003. [6] T. Takenaka, D. J. N. Wall, H. Harada, and M. Tanaka, "Reconstruction algorithm of the refractive index of a cylindrical object from the intensity measurements of the total field," Microwave Optical Technol. Lett., vol. 14, pp. 182-188, Feb. 1997. [7] M. H. Maleki, A. J. Devaney, and A. Schatzberg, "Phase retrieval and intensity only reconstruction algorithms from optical diffraction tomography," J. Opt. Soc. Am. A, vol. 10, pp. 1086-1092, 1993. [8] L. Crocco, M. D'Urso, and T. Isernia, "Inverse scattering from phaseless measurements of the total field on a closet curve," J. Opt. Soc. Am. A, vol. 21, Apr. 2004. [9] S. Caorsi, M. Donelli, D. Franceschini, and A. Massa, "A new methodology based on an iterative multiscaling for microwave imaging," IEEE Trans. on Microwave Theory Tech., vol.51, pp. 1162-1173, Apr. 2003. [10] J. Robinson and Y. Rahmat Sami, "Particle swarm optimization in electromagnetics," IEEE Trans. on Antennas and Propagation, vol.52, pp. 771-778, Mar. 2004. [11] J. Kennedy, R. C. Eberhart, and Y. Shi, Swarm Intelligence, San Francisco, Morgan Kaufmann Publishers, 2001. [12] M. Donelli and A. Massa, "Computational approach based on a particle swarm optimizer for microwave imaging of two-dimensional dielectric scatterers," IEEE Trans. on Microwave Theory Tech., vol.53, pp. 1761-1776, May 2005. [13] K. Belkebir and M. Saillard, Special issue on "Testing inversion algorithms against experimental data: inhomogeneous targets" Inverse Problems, vol.21, pp. 1-3, Dec. 2005. citation: Franceschini, Gabriele and Donelli, Massimo and Franceschini, Davide and Benedetti, Manuel and Rocca, Paolo and Massa, Andrea (2011) Reconstruction of Dielectric Objects from Amplitude - Only Data – Advantages and Open Problems of a Two-Step Multi-Resolution Strategy. [Technical Report] document_url: http://www.eledia.org/students-reports/376/1/DISI-11-240.C125.pdf