Information for Sensor and Index

Formula

General Formula ( n ( 1 - 0.25 n ) - RED - 0.125 1 - RED )
Specific Formula ( 2 ( nahe_Infrarot2 - Rot2 ) + 1.5 nahe_Infrarot + 0.5 Rot nahe_Infrarot + Rot + 0.5 ( 1 - 0.25 2 ( nahe_Infrarot2 - Rot2 ) + 1.5 nahe_Infrarot + 0.5 Rot nahe_Infrarot + Rot + 0.5 ) - Rot - 0.125 1 - Rot )
Calculated Automatic
Comment

Sensor

Name IKONOS-2
Full Name
Bands 5
Spectrum [nm] 445-900
Spat.Res. [m] 0.82-3.2
Inclination 98.1
Platform
Operator GeoEye
Date of Launch 1999-09-24
Comment original IKONOS-1 was lost during launch at 1999-04-27
Usable for Indices yes
Description

Index

Name Global Environment Monitoring Index
Abbreviation GEMI
Formula ( n ( 1 - 0.25 n ) - RED - 0.125 1 - RED )
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

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