International DORIS Service

International DORIS Service
Name	International DORIS Service
Acronym	IDS
Established	2003
Type	International scientific service
Purpose	Precise orbit determination and geodesy
Headquarters	Toulouse
Region served	Global

Contents

International DORIS Service

Overview

The Service coordinates a worldwide network of ground tracking stations, satellite instruments, analysis centers, and data centers to deliver precise positioning, timing, and orbit solutions used by entities such as International GNSS Service, International Laser Ranging Service, International VLBI Service for Geodesy and Astrometry, European Plate Observing System, and Copernicus Programme. Stakeholders include CNES, NASA Goddard Space Flight Center, European Commission, Institut Géographique National, Japan Aerospace Exploration Agency, and national mapping agencies.

The system evolved from Doppler tracking experiments at laboratories like Jet Propulsion Laboratory and observatories including Grasse Observatory and Toulouse Observatory before formal coordination in early 2000s under organizations such as International Association of Geodesy and International Union of Geodesy and Geophysics. Key milestones involved satellite missions like TOPEX/Poseidon, Jason-1, Jason-2, Envisat, SPOT series, and projects with CNES and NASA that demonstrated DORIS utility for sea surface altimetry, orbit determination, and reference frame realization alongside efforts by International Earth Rotation and Reference Systems Service and Global Geodetic Observing System.

The Service’s mission aligns with objectives promoted by United Nations, World Meteorological Organization, Intergovernmental Panel on Climate Change, Group on Earth Observations, and regional bodies like European Space Agency: provide a stable terrestrial reference frame, precise satellite orbits, and geophysical products to support studies of Plate tectonics, sea level rise, glacial isostatic adjustment, and operational services used by agencies including NOAA, USGS, ESA Directorate of Earth Observation Programmes, and EUMETSAT.

The system relies on Doppler-based tracking receivers on satellites and a global network of ground beacons hosted by observatories and institutions such as Toulouse Observatory, Onsala Space Observatory, Stellenbosch University, NASA Goddard Space Flight Center, CNES, and NOAA National Centers for Environmental Information. Key satellite payloads include DORIS instruments aboard missions like Jason-3, Sentinel-3, CryoSat, and historical platforms such as TOPEX/Poseidon; supporting technologies interact with systems like Global Positioning System, Galileo (satellite navigation), GLONASS, and techniques from Satellite Laser Ranging and Very Long Baseline Interferometry. Processing software and analysis standards are developed and used by centers including IGN, GFZ German Research Centre for Geosciences, CNES Toulouse, Institute of Astronomy, University of Hawaii, and Scripps Institution of Oceanography.

Produced deliverables include precise satellite ephemerides, station coordinates, geocenter motion estimates, and time series used by organizations such as European Space Agency, NASA Jet Propulsion Laboratory, NOAA, UN Office for Outer Space Affairs, and research groups at Massachusetts Institute of Technology, Harvard University, and California Institute of Technology. Data archives and distribution are maintained by data centers and services like Centre National d'Études Spatiales, IGN France', GFZ Potsdam, AVISO+, and national data repositories that support users from European Commission projects and academic institutions including University of Cambridge and ETH Zurich.

Applications span altimetry and oceanography used by Copernicus Marine Service and NOAA National Ocean Service, geodesy and crustal deformation studies at institutes like USGS and Geological Survey of Canada, climate research connected to Intergovernmental Panel on Climate Change assessments, and operational navigation support for missions by ESA, CNES, and JAXA. Other applications include ice-sheet monitoring for European Polar Board programs, volcanic deformation tracking with partners such as GNS Science, and combined multi-technique reference frames created with International GNSS Service and International VLBI Service for Geodesy and Astrometry.

Governance involves a governing board, working groups, analysis centers, and a data center network coordinated with parent bodies like International Association of Geodesy and International Union of Geodesy and Geophysics. Participating institutions include national mapping agencies such as IGN, research centers like GFZ German Research Centre for Geosciences and CNES, and university groups at University of Newcastle (Australia), Université de Toulouse, and Observatoire de Paris. Technical standards and conventions are harmonized with committees including International Earth Rotation and Reference Systems Service and advisory panels associated with Committee on Space Research.

The Service collaborates with satellite mission teams from European Space Agency, CNES, NOAA, NASA, EUMETSAT, and JAXA and partners with international services like International GNSS Service, International Laser Ranging Service, International VLBI Service for Geodesy and Astrometry, and regional programs such as Copernicus Programme. Research partnerships extend to universities and laboratories such as Scripps Institution of Oceanography, Massachusetts Institute of Technology, ETH Zurich, University of Bern, and POLITEHNICA University of Bucharest to foster algorithm development, calibration campaigns, and combined geodetic products.

Category:Geodetic organizations