| タイトル | Study to assess the importance of errors introduced by applying NOAA 6 and NOAA 7 AVHRR data as an estimator of vegetative vigor: Feasibility study of data normalization |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830019050 |
| 著者（英） | Duggin, M. J.; Piwinski, D. |
| 著者所属（英） | State Univ. of New York |
| 発行日 | 1982-10-31 |
| 言語 | eng |
| 内容記述 | The use of NOAA AVHRR data to map and monitor vegetation types and conditions in near real-time can be enhanced by using a portion of each GAC image that is larger than the central 25% now considered. Enlargement of the cloud free image data set can permit development of a series of algorithms for correcting imagery for ground reflectance and for atmospheric scattering anisotropy within certain accuracy limits. Empirical correction algorithms used to normalize digital radiance or VIN data must contain factors for growth stage and for instrument spectral response. While it is not possible to correct for random fluctuations in target radiance, it is possible to estimate the necessary radiance difference between targets in order to provide target discrimination and quantification within predetermined limits of accuracy. A major difficulty lies in the lack of documentation of preprocessing algorithms used on AVHRR digital data. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 83N27321
NASA-CR-167835
E83-10346
NAS 1.26:167835 |
| 権利 | No Copyright |
