DORIS days
The first edition, initially planned for 2020 at the University of Vienna, Austria, alongside the EGU but postponed due to the Covid health crisis, was held online in November 2021.
The DORIS days editions are referenced with the DOI: 10.24400/312072/i05-2025.001
The Notebooks are offer under the Creative Commons licence CC-BY-NC 
Cite the presentation as: Last name, First initial. (Year, Month Day). Course title. Event name. DOI: 10.24400/312072/i05-2025.001
Examples:
Le Bail, K. (2025, Nov. 3&5). DORIS System Overview. DORIS days 2025. DOI: 10.24400/312072/i05-2025.001
Couhert, A. (2021, Nov. 16-18). Application of DORIS for the geocenter. DORIS days 2021. DOI: 10.24400/312072/i05-2025.001
DORIS days 2025
2nd edition of the “DORIS Days" designed to offer both a foundational and hands-on experience with DORIS and the IDS community, tailored especially to early-career researchers and students.
Day 1 – Monday, 3 November (second half of UTC day, online only)
Introductory and advanced presentations on the DORIS system, IDS, precision applications, and associated tools and products.
- L. Soudarin: "Welcome and Introduction" (pdf)
Introduce the two-day program - L. Soudarin: "DORIS Context" (pdf)
Provide context on DORIS and its role in space geodesy - K. Le Bail: "DORIS System Overview" (pdf), live recording (mp4)
Understand the DORIS signal, space and ground segments, and real-time orbit determination; gain insight into Genesis mission and upcoming developments - P. Stepanek: "DORIS Data Processing and Products" (pdf), live recording (mp4) + "Introduction to IDS tools" (prerecorded mp4)
Learn the DORIS processing chain, analysis software, standard products, and their performance - J.-M. Lemoine: "Science Applications" (pdf), live recording (mp4)
Explore scientific applications including plate tectonics, gravity-field modeling, and ionospheric monitoring - G. Moreaux: "The International DORIS Service (IDS)" (pdf), live recording (mp4)
Understand IDS structure, mission, data management, network coordination, and contribution to international reference frames - C. Manfredi: "Joining the DORIS/IDS Community" (pdf), live recording (mp4)
Discover ways to engage with the DORIS/IDS community and contribute to research and operations - L. Soudarin: "Conclusion" (pdf)
Summary of day; prepare participants for hands-on training on Day 2
Day 2 – Wednesday, 5 November (full day, hybrid)
Introduction to handling and processing DORIS data, with theoretical lectures and guided practical sessions using Jupyter Notebook, freely available at IDS github. For installation, see readme file.
- E. Schrama: "Doppler Observables and System Biases" (pdf), live recording (mp4), notebook
Learn Doppler observables principles, system biases, RINEX data exploration, and ionosphere considerations; perform localization exercises with Argos simulation - S. Nahmani: "Atmospheric Effects" (pdf), live recording (mp4), notebook
Understand atmospheric influence on DORIS signals and apply corrections to improve data accuracy - J.-M. Lemoine: "Observation Equation" (pdf), live recording (mp4), notebook
Understand the mathematical formulation of DORIS observation equations, parameter estimation, and interpretation of residuals - Arnaud Pollet: "Positioning" (pdf), live recording (mp4), notebook
Apply knowledge to compute positioning solutions, assess accuracy, and consolidate practical and theoretical skills
DORIS days 2021
Three sessions held online on November 16, 17 and 18, 2021.
Purpose: introductory course to give non-practitioners in DORIS the opportunity to broaden their knowledge on the DORIS technique as well as on the use of the IDS routine products.
Session 1 (Introduction to DORIS and the International DORIS Service)
- E. Schrama: "Welcome and Introduction" (pdf), live recording (mp4)
- L. Soudarin: "Introduction to DORIS for POD & Geodesy" (pdf), live recording (mp4)
- J.-M. Lemoine: "DORIS System Technical Overview" (pdf), live recording (mp4)
- CNES: "DORIS the space surveyor" (mp4)
- C. Jayles: "Focus on some specific features of the DORIS system" (mp4, pre-recorded presentation) (text in pdf)
- J. Saunier: "Overview of Ground Network" (pdf), live recording (mp4)
- L. Soudarin: "Network virtual tour" (mkv video)
- L. Soudarin: "Data flow description" (pdf), live recording (mp4)
- L. Soudarin: "Summary of IDS online resources" (pdf), live recording (mp4)
- P. Stepanek: "Organization of DORIS data analysis" (pdf), live recording (mp4)
- L. Soudarin: "Web plottools demonstration" (mkv video)
Session 2 (Overview of Products Derived from DORIS)
- P. Ferrage: "Introduction" (pdf), live recording (mp4)
- F. Lemoine: "Overview of Products for DORIS" (pdf), live recording (mp4)
- E. Schrama: "Overview of Software Processing for DORIS" (pdf), live recording (mp4)
- F. Lemoine: "System (POD & Positioning & EOP) Performance" (pdf), live recording (mp4)
- C. Manfredi: "Why use DORIS on satellite mission?" (pdf), live recording (mp4)
- A. Couhert: "Application of DORIS for the geocenter" (mp4, pre-recorded presentation) (text in pdf)
- K. Le Bail: "How to become involved in the DORIS community?" (pdf), live recording (mp4)
Session 3 (Description DORIS Station Installation and Operations Requirements)
- J. Saunier: "Introduction" (pdf), live recording (mp4)
- J. Saunier: "Site tour at La Réunion DORIS station" (mp4)
- J. Saunier: "Network requirements" (pdf), live recording (mp4)
- C. Jayles: "Optimizing DORIS station distribution" (mp4, pre-recorded presentation) (text in pdf)
- J. Saunier: "Ground station components" (pdf), live recording (mp4)
- C. Manfredi: "Fourth Generation Beacon Description" (pdf), live recording (mp4)
- J. Saunier: "Antenna environment" (pdf), live recording (mp4)
- P. Yaya: "Impact of local antenna environment on data quality" (pdf), live recording (mp4)
- J. Saunier: "Geodetic requirements" (pdf), live recording (mp4)
- D. Pesce: "Local tie surveys at DORIS site" (mp4, pre-recorded presentation)
- T. Klügel: "Colocation and compatibility with VLBI" (pptx with video)
- J. Saunier: "Maintenance requirements" (pdf), live recording (mp4)
- "Tour round the network stations" (slide show) not available
