Paper Abstract and Keywords |
Presentation |
2008-11-25 15:55
Dependency of Backscattering from Ocean Surface on Ocean Winds Observed by an Airborne SAR Akitsugu Nadai, Toshihiko Umehara, Takeshi Matsuoka, Tatsuharu Kobayashi, Seiho Uratsuka (NICT) SANE2008-80 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The normalized radar cross section (NRCS) of ocean surface in the L- and X-bands is measured from three directions of illumination by an airborne dual-frequency synthetic aperture radar (SAR), and the dependency of the NRCS and the polarization ratio on the relative wind direction is analyzed. In the X-band, the dependencies of the NRCSs in the parallel polarizations show different features each other. The NRCS in the X-band HH polarization has difference between the up- and down-wind conditions, though that in the VV polarization, the NRCSs for the up- and down-wind conditions are almost same. The dependency of the NRCS in the L-band on the wind direction is smaller than that in the X-band. The polarization ratio in the X-band shows the dependency on the wind direction with small difference between the up- and down-wind conditions, though that in the L-band is not apparent. The results suggest the possibility of ocean wind measurement using the polarimetric SAR in the X-band. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Ocean Winds / Radar Cross Section / Polarization Ratio / SAR / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 318, SANE2008-80, pp. 95-99, Nov. 2008. |
Paper # |
SANE2008-80 |
Date of Issue |
2008-11-17 (SANE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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SANE2008-80 |
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