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[J−1.1.1 Measurements of Ecosystem Structures using Optical Sensors]


[Contact person]

      TAMURA Masayuki
      Laboratory Head
      Information processing and Analysis Laboratory
      National Institute for Environmental Studies, Japan Environment Agency
      16-2 Onogawa, Tsukuba, Ibaraki, Japan, 305-0053
      Tel: +81-298-50-2479, Fax: +81-298-50-2572
      E-mail: m-tamura@nies.go.jp


[Total Budget for FY1997-1999]

 59,823,000 Yen
 (FY 1999: 20,167,000 Yen)

[Abstract]

 In order to evaluate the role of terrestrial ecosystems in the global environment, we developed methods for measuring vegetation types, structural parameters, biomass, spectral reflectance characteristics and temporal changes using satellite images. First for the measurement of forest structural parameters, we developed a method for measuring forest tree heights using an airborne laser scanner. Secondly as an advanced processing method of satellite imagery, we studied a method for estimating ratios of sub-pixel categories in a pixel. Thirdly as a way to obtain ground-truth spectral data, we developed an imaging spectrometer capable of measuring spectral reflectance at each point in an image.


[Key Words]

 vegetation, airborne laser scanner, structural parameters, tree height, biomass, remote sensing, sub-pixel category, spectral reflectance, imaging spectrometer