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1993 Fiscal Year Final Research Report Summary

Extraction of snowpack parameters from the microwave remote sensing data obtained by the earth observation satellites.

Research Project

Project/Area Number 03452160
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 電子通信系統工学
Research InstitutionHokkaido Institute of Technology

Principal Investigator

SUZUKI Masahiro  Hokkaido Inst.of Tech., Professor, 工学部, 教授 (10048035)

Co-Investigator(Kenkyū-buntansha) NISHITSUJI Akira  Muroran Inst.of Tech., Professor, 工学部, 教授 (90001677)
SASAKI Masami  Hokkaido Inst.of Tech, Associate Prof., 工学部, 助教授 (70196179)
Project Period (FY) 1991 – 1993
Keywordsmicrowave remote sensing / snowpack / synthetic aperture radar / microwave radiometer / FM-CW radar / MOS-1 / JERS-1 / ERS-1
Research Abstract

(1) Extraction of snowpack paramters from the data obtained by the SAR.
Using a scattering model for the snowpack, analyzes were carried out for obtaining the backscattering coefficient to be measured by the Synthetic Aperture Radar(SAR) mounted on JERS-1 and ERS-1.
Results of the analyzes show that JERS-1/SAR is effective for the measurement of depth and water content within the wet snowpack, and ERS-1/SAR is effective for the measurement of depth and grain size within the dry snowpack. And also, results of comparison between the data obtained by ERS-1/SAR and ground truth data show a validity of this method of analysis for the estimation of snowpack parameters with high spatial resolution.
(2) Extraction of snowpack parameters from the data obtained by the MSR.
Using a emission model for the snowpack, analyzes were carried out for obtaining the brightness temperature and emissivity to be measured by the Microwave Scanning Radiometer (MSR) mounted on MOS-1 and MOS-1b. The brightness temperature depended on the stratification of the snowpack having various grain sizes and also observed frequencies.
At the present stage, the remote sensing of the snowpack by MSR mounting on satellite has an availability for the macroscopic estimation of seasonal and annual snowcover such a vast extent as Hokkaido, though the precise analyzes on the effects such as terrain, forest and so forth should be needed together with improvement in the spatial resolution.
(3) Development of a portable FM-CW radar.
A portable FM-CW radar sysytem for collecting the ground truth data of snowpack, such as depth, density, stratigraphy and so on, was developed. The topography of the internal layred structure in the snowpack was composed and displayd on the LCD, using the data collected by the system moving on the snow surface.
Experimental results showed the validity of this portable radar for collecting the ground truth data of snowpack in the microwave observation from satellites.

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] K.Fujino,T.Kawamura,M.Suzuki,M.Sasaki,K.Takeda,and K.Watanabe: "Microwave signatures from snowpack." Proceedings of IGARSS'91. 4. 1959-1960 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西辻昭、遠藤辰雄: "雪雲を電波で調べる" 電子情報通信学会誌. 74. 909-913 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 青木由直、鈴木勝裕、松本正: "積雪内部を電波で映像化する" 電子情報通信学会誌. 74. 914-918 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Suzuki,M.Sasaki,T.Matsumoto and K.Fujino: "Radiometric observation of snowpack by MOS-1." Proceedings of ISAP'92. 3. 857-860 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Sasaki,M.Suzuki,K.Fujino and T.Kawamura: "A portable FM-CW radar for collecting the ground truth data of snowpack." Proceedings of IGARSS'93. 4. 1648-1650 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 高森泰亘、佐々木正巳、鈴木勝裕、村田和美: "JERS-1,ERS-1搭載SARにより観測される積雪の散乱特性" 電子情報通信学会技術研究報告. A・P93-105. 39-44 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Fujino, T.Kawamura, M.Suzuki, M.Masaki, K.Takeda, and K.Watanabe: ""Microwave signatures from snowpack."" Proceeding of IGARSS'91. Vol.4. 1959-1960 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Nishitsuji and T.Endoh.: ""Investigation on snow cloud by radio wave"" Journal of IEICE, Vol.74. No.9. 909-913 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Aoki, M.Suzuki and T.Matsumoto: ""Visulization of the inside of fallen snows by radio wave."" Journal of IEICE, Vol.74. No.9. 914-918 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Sasaki, M.Suzuki and K.Fujino: ""Study of snowpack observation by MSR on the Marine Observation Satellite -1."" Memoirs of Hokkaido Inst.of Tech.No.20. 213-218 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Suzuki, M.Sasaki T.Matsumoto and K.Fujino: ""Radiometric observation of snowpack by MOS-1."" Proceeding of ISAP'92.Vol.3. 857-860 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Sasaki and M.Suzuki: ""Remote sensing of snowpack by synthetic aperture radar on the satellite."" Memoirs of Hokkaido Inst.of Tech.No.21. 181-187 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Sasaki and M.Suzuki, K.Fujino and T.Kawamura: ""A portable FM-CW radar for collecting the ground truth data of snowpack."" Proceeding of IGARSS'93. Vol.4. 1948-1950 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Suzuki, M.Sasaki, K.Fujino and T.Kawamura: ""Availability of the MSR data for snow cover estimation" 24th URSI General Assembly. F1-P5. 218 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Takamori, M.Sasaki, M.Suzuki and K.Murata: ""Scattering properties of snowpack observed by the SAR mounted on JERS-1 and ERS-1."" Techinical Report of IEICE. AP93-105. 39-44 (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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