Image reconstruction from the 1997 Ipswich data using a conjugate-gradient algorithm

Author

Lobel, P. ; Pickot, C. ; Blanc-Féraud, L. ; Barlaud, M. ; Louis, A.K.

Author_Institution

Lab. d´´Electron., Antennes et Telecommun., Nice Univ., France

Volume

41

Issue

1

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

48

Lastpage

51

Abstract

The conjugate gradient algorithm is shown to be effective in reconstructing targets from experimental radar measurements. Enhancement, using the reciprocity relation to complete the scattered data, is also shown. The small number of iterations needed to obtain a satisfying solution (less than 50 iterations), combined with the increasing computation power of new processors (an SGI R10000 needs 30 sec to compute one iteration), make it possible for this algorithm to be used for practical applications

Keywords

conjugate gradient methods; image enhancement; image reconstruction; radar imaging; 1997 Ipswich data; conjugate-gradient algorithm; enhancement; iteration; radar image reconstruction; reciprocity relation; scattered data; Character generation; Convergence; Cost function; Electromagnetic scattering; Image reconstruction; Inverse problems; Iterative algorithms; Permittivity; Scattering parameters; Stability;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/74.755026

Filename

755026