Focusing resonance signatures in ultra-wideband SAR images by allpass filtering

Authors
Rau, R McClellan, JH
Citation
R. Rau et Jh. Mcclellan, Focusing resonance signatures in ultra-wideband SAR images by allpass filtering, IEEE IM PR, 9(9), 2000, pp. 1640-1644
Citations number
8
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON IMAGE PROCESSING
ISSN journal
10577149 → ACNP
Volume
9
Issue
9
Year of publication
2000
Pages
1640 - 1644
Database
ISI
SICI code
1057-7149(200009)9:9<1640:FRSIUS>2.0.ZU;2-2
Abstract
This correspondence shows that resonance signatures in ultra-wideband synth etic aperture radar (SAR) images, which are smeared out due to their late a rrival time, can be focused and extracted by postfiltering the SAR images w ith special two-dimensional (2-D) allpass filters. A design algorithm for F IR approximations to the desired allpass filters based on radial slice appr oximations (RSA) is presented.