Level	Radiometry	Geometry	User(s)
0	Raw	Raw	System
1	Radiometric corrections and PA restauration	Raw	System/Defense
Perfect Sensor	Idem 1 + PA/XS fusion	Raw perfect sensor	Added Value Compagnies ???
Orthoimages	Idem 1 + PA/XS fusion	Cartographic projection	GIS
Orthomosaic	Idem 1 + PA/XS fusion	Cartographic projection	GIS

Sensor Geometry

Land Geometry

Level 0

Raw image given by the system:

Used for calibration and the measure of the performances

5 adjacent bands not superimposed to build the whole field
Volume for one scene:

PA: 1.8 Gb
XS: 450 Mb

Level 1

Image with the same geometry than the Level 0
Radiometrically corrected:

aberrant detectors
ZIB reconstruction
ghost images XS AC
PA restauration

5 adjacent bands not superimposed to build the whole field
Volume for one scene: idem level 0

PA: 1.8 Gb
XS: 450 Mb

Level Perfect Sensor

Radiometry:

idem level 1
PA + XS fusion

Geometry:

PA + XS detectors rectilinear
attitude smoothed
perfect dating / orbito

Product preprocessed (the preprocessings consist in the elimination of all the effects due to Pleiades instrument and the restitution in a perfect sensor geometry) before projection on the ground:

users interfaces simplified
localisation accuracy preserved

Volume for one scene:

PA alone: 3.6 Gb
XS alone: 900 Mb
PA + XS: 18 Gb

Level Orthoimages / Orthoimages Mosaic

Projection on the ground:

corrected of relief effets but not of the superstructures

Coordinates system geographic or cartographic
Final product dedicated to GIS
Volume for one scene: idem PS

PA alone: 3.6 Gb (nadir 50 cm)
XS alone: 900 Mb (nadir 2 m)
PA + XS: 18 Gb (nadir 50 cm)

Latest update 15/05/2006