Title :
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
fDate :
2/1/1999 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation Magazine, IEEE
