Journal of Geodesy

, Volume 80, Issue 8–11, pp 457–472 | Cite as

DORIS: System Description and Control of the Signal Integrity

  • C. JaylesEmail author
  • B. Nhun-Fat
  • C. Tourain
Original Article


Since 1990, DORIS has evolved from a core system initially devoted to altimetry and precise positioning to become a very complete system today, able to deliver both real-time products and very precise retrieved orbits at the 1 cm level. The first part of this paper is an overall description of the DORIS system, as it is today after more than 15 years. The main components of the system are detailed, and their external and internal connections are described. The second part presents the different DORIS products, which are generated and used by the scientific community in the context of the International DORIS Service (IDS). The quality of these products is discussed by comparison with other techniques, which tends to prove in our opinion that these different geodetic techniques are complementary for scientific research. Finally, the third part of the paper focuses on the work of the DORIS integrity team, which checks the data daily in order to verify the integrity of the system, i.e. its compliance with its specifications. This activity implies immediate detection of every beginning of an incident, long before it can be detected by the users. This integrity work has been reinforced recently, and now these controls can be described. Today, DORIS is able to guarantee to its users a 99.7% availability of its products, and a 100% integrity of the system.


DORIS Precise orbit determination Geodesy System integrity 


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Centre National d’Etudes Spatiales (CNES)Toulouse cedex 9France
  2. 2.Collecte et Localisation par Satellites (CLS)Ramonville St. AgneFrance

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