DocumentCode
1469792
Title
Ocean surface velocity estimation in multichannel ATI-SAR systems
Author
Lombardini, F. ; Griffiths, H.D. ; Gini, F.
Author_Institution
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Volume
34
Issue
25
fYear
1998
fDate
12/10/1998 12:00:00 AM
Firstpage
2429
Lastpage
2431
Abstract
Conventional along-track interferometric (ATI) synthetic aperture radar (SAR) systems derive the ocean surface velocity from an estimate of the phase difference between the SAR echoes received from two displaced phase centres with a single time-lag. A maximum likelihood algorithm is proposed to process multichannel SAR data from an array of phase centres with multiple time-lags. The new technique provides better estimation accuracy than the conventional technique, unambiguous velocity retrieval, and extended operational capability
Keywords
maximum likelihood estimation; oceanographic techniques; radar imaging; radiowave interferometry; remote sensing by radar; synthetic aperture radar; along-track interferometric SAR; estimation accuracy; maximum likelihood algorithm; multichannel ATI-SAR systems; multichannel SAR data; multiple time-lags; ocean surface velocity estimation; phase centres array; synthetic aperture radar;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19981677
Filename
744030
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