Author： Matsuoka Takeshi Uratsuka Seiho Satake Makoto Kobayashi Tatsuharu Nadai Akitsugu Umehara Toshihiko Maeno Hideo Wakabayashi Hiroyuki Nakamura Kazuki Nishio Fumihiko
Publisher： International Glaciological Society
ISSN： 1727-5644
Source： Annals of Glaciology, Vol.33, Iss.1, 2001-01, pp. : 115-119
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Abstract
Multi-frequency, multi-polarization airborne synthetic aperture radar (SAR) observations of sea ice in the southern Sea of Okhotsk were carried out in February 1999 in conjunction with RADARSAT SAR observations. The final goal of this study is to clarify the backscattering characteristics and to understand the scattering mechanisms of sea ice in the Sea of Okhotsk by using microwave multiparametric SAR. The airborne SAR (Pi-SAR) has two frequencies (X- and L-band) and multi-polarization (HH, VV, HV, VH) with 1.5 m (X-band) and 3.0 m (L-band) resolution. It was developed by the Communications Research Laboratory (X-band) and the National Space Development Agency of Japan (L-band). We show the frequency dependence and polarization properties of radar backscattering from sea ice. We find that it is possible to distinguish ice types by comparing backscattering from sea ice in the X- and L-bands. Investigation of the polarization characteristics at X-band was very useful for detecting the thin-ice area (e.g. nilas and gray ice).
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By Wakabayashi Hiroyuki Matsuoka Takeshi Nakamura Kazuki Nishio Fumihiko
Annals of Glaciology, Vol. 33, Iss. 1, 2001-01 ,pp. :