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| Titel |
Comparing C- and L-band SAR images for sea ice motion estimation |
| VerfasserIn |
J. Lehtiranta, S. Siiriä, J. Karvonen |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 9, no. 1 ; Nr. 9, no. 1 (2015-02-17), S.357-366 |
| Datensatznummer |
250116755
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| Publikation (Nr.) |
 copernicus.org/tc-9-357-2015.pdf |
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| Zusammenfassung |
| Pairs of consecutive C-band synthetic-aperture radar (SAR) images are routinely used for sea ice motion
estimation. The L-band radar has a fundamentally different character, as its
longer wavelength penetrates deeper into sea ice. L-band SAR provides
information on the seasonal sea ice inner structure in addition to the
surface roughness that dominates C-band images. This is especially useful in
the Baltic Sea, which lacks multiyear ice and icebergs, known to be
confusing targets for L-band sea ice classification. In this work, L-band SAR
images are investigated for sea ice motion estimation using the
well-established maximal cross-correlation (MCC) approach. This work provides
the first comparison of L-band and C-band SAR images for the purpose of
motion estimation. The cross-correlation calculations are hardware
accelerated using new OpenCL-based source code, which is made available
through the author's web site. It is found that L-band images are preferable
for motion estimation over C-band images. It is also shown that motion
estimation is possible between a C-band and an L-band image using the maximal
cross-correlation technique. |
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