The DORIS system (Doppler Orbitography and Radio positioning Integrated by Satellite) was developed in the early eighties by CNES and IGN (Institut Géographique National) teams with Scientifics from GRGS (Groupe de Recherche en Géodésie Spatiale) and industry, DORIS was first tested on the SPOT-2 satellite, launched on the 22nd January 1990. A DORIS receiver was then on board Earth observation missions SPOT-3 (1993), SPOT-4 (1998) and SPOT-5 (2002) helping in the orbit determination, images localization and unification of satellite time with ground time. It is also embarked on Pleiades (2012)
Concerning altimetric missions, DORIS was on-board the French-American satellite TOPEX/Poseidon then on Jason-1 (2001), ENVISAT (2002) and Jason-2 (2008), CRYOSAT-2 ice mission (2010), to the French-Chinese oceanography mission HY-2A (2011) and to the French-Indian mission SARAL/AltiKa 2013). Then, Sentinel-3, Jason-3 and SWOT will also benefit from DORIS system.
Over the years, the system efficiency never ceased growing to better answer users' needs. DORIS is now an international reference system as GPS, laser telemetry or very long base interferometry techniques (VLBI).
DORIS products are available in AVISO directory and IDS data centers