A signal-subspace approach to reconstruct the permittivities of extended scatterers in two-dimensional settings is proposed. A portion of the scatterers’ information is retrieved by the signal-subspace method, and the remaining part is obtained by solving a nonlinear least-squares problem. The method exhibits several strengths, including robustness against noise, fast convergence, less scattering data, high resolution, and the ability to deal with scatterers of special shapes.
© 2009 Optical Society of America
Original Manuscript: November 25, 2008
Revised Manuscript: February 11, 2009
Manuscript Accepted: February 12, 2009
Published: March 25, 2009
Vol. 4, Iss. 6 Virtual Journal for Biomedical Optics
Xudong Chen, "Application of signal-subspace and optimization methods in reconstructing extended scatterers," J. Opt. Soc. Am. A 26, 1022-1026 (2009)