| タイトル | Algorithm for Atmospheric Corrections of Aircraft and Satellite Imagery |
| 本文（外部サイト） | http://hdl.handle.net/2060/19900004660 |
| 著者（英） | Ferrare, Richard A.; Fraser, Robert S.; Mattoo, Shana; Kaufman, Yoram J. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1989-12-01 |
| 言語 | eng |
| 内容記述 | A simple and fast atmospheric correction algorithm is described which is used to correct radiances of scattered sunlight measured by aircraft and/or satellite above a uniform surface. The atmospheric effect, the basic equations, a description of the computational procedure, and a sensitivity study are discussed. The program is designed to take the measured radiances, view and illumination directions, and the aerosol and gaseous absorption optical thickness to compute the radiance just above the surface, the irradiance on the surface, and surface reflectance. Alternatively, the program will compute the upward radiance at a specific altitude for a given surface reflectance, view and illumination directions, and aerosol and gaseous absorption optical thickness. The algorithm can be applied for any view and illumination directions and any wavelength in the range 0.48 micron to 2.2 micron. The relation between the measured radiance and surface reflectance, which is expressed as a function of atmospheric properties and measurement geometry, is computed using a radiative transfer routine. The results of the computations are presented in a table which forms the basis of the correction algorithm. The algorithm can be used for atmospheric corrections in the presence of a rural aerosol. The sensitivity of the derived surface reflectance to uncertainties in the model and input data is discussed. |
| NASA分類 | COMPUTER PROGRAMMING AND SOFTWARE |
| レポートNO | 90N13976
NASA-TM-100751
REPT-90B00032
NAS 1.15:100751 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/139554 |
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