&sq=&lang=&file=File:Doris-system.jpg) The DORIS antenna and receiver installed onboard OSTM/Jason-2 satellite | |
| Country/ies of origin | France |
|---|---|
| Operator(s) | CNES |
| Type | Civilian |
| Status | Operational |
| Constellation size | |
| Nominal satellites | 0 (ground transmitters only) |
| First launch | 1990 |
DORIS is a French satellite system used for the determination of satellite orbits (e.g. TOPEX/Poseidon) and for positioning. The name is an acronym of "Doppler Orbitography and Radiopositioning Integrated by Satellite" or, in French, Détermination d'Orbite et Radiopositionnement Intégré par Satellite.