Title:
METHOD OF OBSERVING SEA ICE
Document Type and Number:
WIPO Patent Application WO/2003/048803
Kind Code:
A1
Abstract:
An ice thickness&sol drift speed observation of sea ice using an underwater mooring type ice thickness measuring sonar and a flow rate meter is conducted in synchronization with a sea ice observation by a high−resolution flight SAR, to determine the relation between the draft profile of sea ice passed over the sonar and an SAR back−scattering coefficient profile, and a desired sea−ice draft is obtained from the relational expression and an SAR back−scattering coefficient. The back−scattering coefficient of L band HV polarization may be used as an SAR back−scattering coefficient. The back−scattering coefficient of an X band VV polarization is preferably used as an SAR back−scattering coefficient in detecting thin ice up to about 10 cm thick.
Inventors:
MATSUOKA TAKESHI (JP)
URATSUKA SEIHO (JP)
SATAKE MAKOTO (JP)
KOBAYASHI TATSUHARU (JP)
NADAI AKITSUGU (JP)
UMEHARA TOSHIHIKO (JP)
MAENO HIDEO (JP)
WAKABAYASHI HIROYUKI (JP)
FUKAMACHI YASUSHI (JP)
NISHIO FUMIHIKO (JP)
URATSUKA SEIHO (JP)
SATAKE MAKOTO (JP)
KOBAYASHI TATSUHARU (JP)
NADAI AKITSUGU (JP)
UMEHARA TOSHIHIKO (JP)
MAENO HIDEO (JP)
WAKABAYASHI HIROYUKI (JP)
FUKAMACHI YASUSHI (JP)
NISHIO FUMIHIKO (JP)
Application Number:
PCT/JP2002/002002
Publication Date:
June 12, 2003
Filing Date:
March 04, 2002
Export Citation:
Assignee:
COMM RES LAB INDEPENDENT ADMIN (JP)
NAT SPACE DEV AGENCY (JP)
JAPAN SCIENCE & TECH CORP (JP)
MATSUOKA TAKESHI (JP)
URATSUKA SEIHO (JP)
SATAKE MAKOTO (JP)
KOBAYASHI TATSUHARU (JP)
NADAI AKITSUGU (JP)
UMEHARA TOSHIHIKO (JP)
MAENO HIDEO (JP)
WAKABAYASHI HIROYUKI (JP)
FUKAMACHI YASUSHI (JP)
NISHIO FUMIHIKO (JP)
NAT SPACE DEV AGENCY (JP)
JAPAN SCIENCE & TECH CORP (JP)
MATSUOKA TAKESHI (JP)
URATSUKA SEIHO (JP)
SATAKE MAKOTO (JP)
KOBAYASHI TATSUHARU (JP)
NADAI AKITSUGU (JP)
UMEHARA TOSHIHIKO (JP)
MAENO HIDEO (JP)
WAKABAYASHI HIROYUKI (JP)
FUKAMACHI YASUSHI (JP)
NISHIO FUMIHIKO (JP)
International Classes:
G01S7/02; G01S7/40; G01S13/86; G01S13/90; G01S13/95; G01S15/88; (IPC1-7): G01S13/89; G01S13/95; G01S13/86
Domestic Patent References:
| WO1996013733A1 | 1996-05-09 |
Foreign References:
| JPH11248833A | 1999-09-17 | |||
| JPS62124480A | 1987-06-05 |
Other References:
Tsuyoshi MATSUOKA, Noboru SUDO, Makoto SATAKE, et al., "Classification of sea ice types in the Sea of Okhotsk using dual-frequency multi-polarization airborne SAR (Pi-SAR) data", 30th Proceedings of the Japanese Conference on Remote Sensing, 09 May, 2001, The Remote Sensing Society of Japan, pages 254, 254; Abstract
Joji IIZAKA, Gosei Kaiko Radar Gazo Handbook, K. K. Asakura Shoten, 20 May, 1998, pages 132 to 141
WAKABAYASHI H., MATSUOKA T., NAKAMURA K., NISHIO F. "Monitoring sea ice using polarimetric SAR data results from Okhotsk and Lake Saroma experiments", Geoscience and Remote Sensing Symposium, 2000. Proceedings IGARSS 2000. IEEE 2000 International Volume, Vol. 2, pages 503 to 505
MATSUOKA T., URATSUKA S., TAKAHASHI A., KOBAYASHI T., et al., "A backscattering model for bubbles in lake ice and comparisons with satellite and airborne SAR data", Geoscience and Remote Sensing Symposium, 1999, IGARSS'99 Proceedings. IEEE 1999 International Volume, Vol. 1, pages 107 to 109
Joji IIZAKA, Gosei Kaiko Radar Gazo Handbook, K. K. Asakura Shoten, 20 May, 1998, pages 132 to 141
WAKABAYASHI H., MATSUOKA T., NAKAMURA K., NISHIO F. "Monitoring sea ice using polarimetric SAR data results from Okhotsk and Lake Saroma experiments", Geoscience and Remote Sensing Symposium, 2000. Proceedings IGARSS 2000. IEEE 2000 International Volume, Vol. 2, pages 503 to 505
MATSUOKA T., URATSUKA S., TAKAHASHI A., KOBAYASHI T., et al., "A backscattering model for bubbles in lake ice and comparisons with satellite and airborne SAR data", Geoscience and Remote Sensing Symposium, 1999, IGARSS'99 Proceedings. IEEE 1999 International Volume, Vol. 1, pages 107 to 109
Attorney, Agent or Firm:
Watanabe, Satoshi (Saneicho Shinjuku-ku, Tokyo, JP)
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