Information for Sensor and Index
Formula
General Formula | |
---|---|
Specific Formula | |
Calculated | Automatic |
Comment |
Sensor
Name | SPOT 4 |
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Full Name | Système Probatoire d’Observation de la Terre, später: Satellite Pour l’Observation de la Terre |
Bands | 5 |
Spectrum [nm] | 500-1750 |
Spat.Res. [m] | 10-20 |
Inclination | 0 |
Platform | SPOT |
Operator | CNES (Centre National d'Etudes Spatiales) |
Date of Launch | 1998-04-24 |
Comment | Stereo capability |
Usable for Indices | yes |
Description |
Index
Name | Global Environment Monitoring Index |
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Abbreviation | GEMI |
Formula | |
Variables | n = ( 2 * ( NIR ^2 - RED ^2) + 1.5 * NIR + 0.5 * RED ) / ( NIR + RED + 0.5 ) |
Expl. of Variables | |
Wavelengths | 640:760,780:1400 |
Source | Original formula |
Description | Bannari 1996 |
References
Visualisation
Sensor
Index