Both POLDER instruments have been developed by CNES in partnership with the industrial contractors shown on the diagram bellow.

instrument manager: SERESO onboard software: ALTEN converters and housekeeping: EREMS optomechanical block: CERCO detection unit: SOPELEM / SOFRETEC CCD: THOMSON bearings: ADR motor: SAGEM structure: LATECOERE multilayer insulation: ZODIAC video: SEXTANT

The POLDER ground segment has been developed, under CNES prime contractorship, in conjunction with various industrial contractors:

THALES IS, previously THOMSON SYSECA (POLDER production center and level 1 processing system)
CAP SESA REGIONS (image quality system)
CSSI, previously CISI Ingenierie (level 2 and 3 processing systems)
SILOGIC (Prime contractorship's assistance)
and partners:
CEA/LSCE (scientific processing expertise)
Météo France (supply of meteorological data)

The scientific algorithms have been defined and validated by several science laboratories:

Laboratoire d'Optique Atmosphérique (LOA)
Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
Laboratoire de Météorologie Dynamique (LMD)
POSTEL at Medias France (for POLDER-2, Land Surfaces)
NOVELTIS (for POLDER-2, Land Surfaces, under CNES contract)
Centre d'Etudes Spatiales de la BIOsphère (CESBIO) (for POLDER-1 only)
Laboratoire de Physique et Chimie Marines (LPCM) (for POLDER-1 only)

With the support of CNES, CEA, CNRS, INSU, University & Regions of Nord Pas de Calais and Midi Pyrénées.