多バンド放射温度計を対象とした温度・放射率分離法の開発とＡＳＴＥＲ用温度・放射率分離アルゴリズムの評価

DOI

書誌事項

タイトル別名
  • Temperature and Emissivity Separation for Multi-band Radiometer and Validation ASTER TES Algorithm

抄録

This paper proposes a new method for temperature and emissivity separation using the multi-band radiometer (MBR) which has five narrow bands and one broad band in the thermal infrared region. Temperature and emissivity separation has difficult problem because there are N measurements but N+1 unknowns. Various approaches have been used to solve this problem, but all approaches require assumptions. The proposed algorithm, we call MBR TES, uses multiple data-sets acquired for the same target at different temperatures, so it can decrease the number of unknowns than the number of measured radiance. In this algorithm, MBR TES, temperature and spectral emissivity are determined by the optimization of the over-determined simultaneous equations. MBR TES was applied to simulated and actual data to evaluate its accuracy. The simulation results show that MBR TES retrieve the emissivity error within the range of about±0.015 (1σ) and the temperature error within the range of about ±0.5K (1σ). MBR TES was also applicable to the actual data obtained at Hawaii and Stonewall Playa too. Furthermore, we validated ASTER TES algorithm using the established MBR TES emissivity at Railroad Valley and Salton Sea. Consequently, the reliability of ASTER TES was shown.

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キーワード

詳細情報 詳細情報について

  • CRID
    1390001204665963392
  • NII論文ID
    130003440790
  • DOI
    10.11440/rssj1981.23.364
  • ISSN
    18831184
    02897911
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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