Meeting presentations

Dates: Tuesday 6 and  Wednesday 7 April 2021

Organization: Hugues Capdeville (CLS), Petr Štěpánek (GOP)

Online meeting

List of attendees


Claudio Abbondanza (NASA/JPL
Zuheir Altamimi (IGN)
Hugues Capdeville (CLS)
Alexandre Couhert (CNES)
Denise Dettmering (DGFI-TUM)
Pascale Ferrage (CNES)
Rolf König (GFZ)
Karine Le Bail (CTH)

Frank G. Lemoine (NASA/GSFC
Jean-Michel Lemoine (CNES)
Flavien Mercier (CNES)
Guilhem Moreaux (CLS)
John Moyard (CNES)
Samuel Nahmani (IGN)
Michiel Otten (ESOC)
Arnaud Pollet (IGN)

Sergei Rudenko (DGFI-TUM)
Jerome Saunier (IGN)
Ernst Schrama (TU Delft)
Patrick Schreiner (GFZ)
Laurent Soudarin (CLS)
Petr Štěpánek (GOP)
Tonie van Dam (U. of Luxembourg) 
Julian Zeithöfler (DGFI-TUM)




  • 6th April 15:00-17:00 European time (France/Germany)

15:00 Hugues Capdeville, Petr Štěpánek: Welcome, organization

DORIS system session

15:15 Laurent Soudarin: IDS news

15:30 Pascale Ferrage: Status of the Doris system

15:45 Jerome Saunier: DORIS Network status


ITRF reprocessing session

16:00 Zuheir Altamimi: Status of ITRF2020 and IDS Contribution

16:15 Guilhem Moreaux: IDS contribution to the ITRF2020

16:30 Patrick Schreiner: On the processing of GFZ's DORIS contribution to ITRF2020

16:45 Frank Lemoine: GSC report


  • 7th April 15:00-17:00 European time (France/Germany)

ITRF reprocessing session, continue

15:00 Petr Štěpánek: GOP report

15:15 Hugues Capdeville: GRG report

Open session

15:30 Sergei Rudenko, Mathis Bloßfeld and Julian Zeitlhöfler: "On the recent activities of the IDS Associate Analysis Center at DGFI-TUM".

15:45 Alexandre Couhert, John Moyard and Flavien Mercier: "First POD Results on HY-2C"

16:00 Alexandre Couhert, John Moyard and Flavien Mercier: "First POD Results on Sentinel-6A"

16:15 Petr Štěpánek and Urs Hugentobler: "Sentinel-3A and Sentinel-3B SAA effects"

16:30 Discussion

17:00 End


The IDS workshop 2021 will be held at the Palazzo del Casinò in Venice, Italy, from 18 to 20 October 2021, as part of the altimetry event "Continued, enhanced ocean altimetry and climate monitoring from space", with the Ocean Surface Topography Science Team (OSTST) meeting 2021.


A hybrid in-situ and virtual meeting format is planned.


Call for papers

The abstract submission for the IDS Workshop (and OSTST meeting) is now open through this interface and will end June 12 (midnight UTC):

If you are NOT planning to attend the IDS WS 2021 in person, please choose the "Forum only" (Type Requested) for your submitted abstract.


Logistical details are available on the meeting at the URL: (keydates, registration) 


The IDS workshop will highlight current developments and the status of scientific results that use DORIS data, and will provide a platform for discussion and coordination of future activities.

IDS contributors are invited to submit a presentation to the IDS workshop for presenting results in relation with topics such as:

  • DORIS network and constellation: status and evolution
  • IDS processing for the ITRF2020
  • Precise orbit modeling and Precise Orbit Determination
  • Reduction of Systematic Errors & Simulations of New Instrument or System Configurations
  • Research activities and new applications using DORIS data, or new methods of processing DORIS data.

We also welcome papers that describe the progress of the activities pertaining to the DORIS operational combination. POD modelling issues related to radiation pressure, atmospheric drag, geocenter motion model, tropospheric delay and mapping functions, and phase center corrections that affect the quality of the DORIS products and papers that review progress in these areas will be especially welcome. We also welcome papers that synergistically use DORIS data in combination with other geodetic techniques (e.g., SLR, GNSS, VLBI), including multi-technique combinations for the terrestrial reference frame. DORIS being a dual-frequency radio technique, provides a means to sound the ionosphere, and we welcome papers that use or compare the DORIS measurements with models or to calibrate the performance of satellite radar altimeters or make other uses of these ionospheric data. As part of a pilot project, DORIS data are now being available in near-real time (NRT). Papers that describe NRT applications of different types are welcome.

The Scientific Committee will draw up a programme and an agenda at a later stage, according to the submitted abstracts.


Scientific Committee:

  • Chair: Frank Lemoine (NASA/GSFC, USA)
  • Committee members:
    • Petr Štěpánek (GOP, Czech Republic)
    • Hugues Capdeville (CLS, France)
    • Pierre Exertier (Observatoire Midi-Pyrénées, France)
    • Karine Le Bail (Chalmers University, Sweden)
    • Mathis Bloßfeld (DGFI, Technical University of Munich, Germany)


Please contact the IDS Central Bureau if you have any questions (This email address is being protected from spambots. You need JavaScript enabled to view it.). 


Petr Stepanek & Hugues Capdeville, IDS Analysis Coordination (This email address is being protected from spambots. You need JavaScript enabled to view it.)

(On behalf of the IDS Workshop Scientific Committee)


The IDS workshop 2020 will take place in conjunction with the OSTST meeting on 19-21 October 2020, in Venice, Italy.
Information will be updated on the conference website at
Please reserve these dates in your agenda.


We regret to announce that due to the corona virus crisis, the DORIS Day session associated with the EGU meeting in Vienna in May 2020 is now cancelled.
On March 19, the EGU informed potential attendees on its website about the cancellation of the General Assembly 2020. Under these conditions and as we said in our email on March 9, 2020, we cannot hold this DORIS workshop for interested users.
We thank the Technical University of Vienna for kindly offering to be the host of this meeting.
We will keep you informed when in the future we will be able to organize such a community user workshop.
We hope that everyone including your family and colleagues stay safe and healthy during this difficult time.

Information on the coronavirus

Since the DORIS day is organized on the premises of the T.U. Wien, the participants in the DORIS day event are subject to the measures recommended by the University in relation to the coronavirus.
In addition, since the DORIS Day is being held in conjunction with the EGU General Assembly, to take advantage of the large number of participants at this event, the holding of the DORIS day 2020 workshop also depends on the status of the EGU2020 meeting in Vienna.

On March 09, 2020, information from the EGU Programme Committee Chair on EGU website ( says that in light of the developing coronavirus outbreak, the Union will make a final careful decision regarding the status of the General Assembly 2020 by 31 March.

Therefore following the lead of the EGU, the IDS  suspends the registration for the DORIS Day 2020 for the time being and recommends that participants postpone making any further travel and accommodation bookings unless reimbursement is guaranteed. We will provide an update after the 31st of March.

Information on the coronavirus can be found on the web sites of TU Wien and EGU. Please check these information pages periodically for up-to-date advice.


Objective and program

The IDS is organizing a “DORIS Day” on Saturday 2 May 2020 at the Technical University of Vienna, Austria, prior to the EGU 2020.

This IDS event aims at introducing the DORIS technique and at fostering the use of the IDS routine products (coordinate time series, DORIS RINEX data, ephemerides of DORIS satellites…) to people who are not familiar with this satellite positioning technique.

The “DORIS day” is divided into two parts: a short introduction on the DORIS technique (history, space and ground segments, how to use the DORIS data, DORIS and the IDS) and half a day on the use of the IDS products for tectonics, sea level and land motion monitoring, space weather…


What does the DORIS Day provide?

The “DORIS Day” is a one-day 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.

Who is the DORIS Day for?

The “DORIS Day” is devoted to attendees neither familiar nor currently working with DORIS. The seminars will be given at the level of a non-expert. Furthermore, talks will be given in a tutorial format, with time for questions and discussion.

When the “DORIS Day” is scheduled?

The course is scheduled for Saturday, May 2nd, 2020, prior to the EGU 2020.

Where the DORIS Day will take place?

The course will take place at the Technical University of Vienna (Austria).

Address: Wiedner Hauptstrasse 8-10, 1040 Vienna (near Karlsplatz)

Room: DB02 (Yellow area, 2nd floor)

What to do if I am interested in the “DORIS Day”?

We kindly invite you to register for free at

If you have any question regarding the content or the organization, feel free to contact us at This email address is being protected from spambots. You need JavaScript enabled to view it..

All the information related to this day will be available on this page.



Preliminary program (v1 – 06/02/2020)

Saturday, May 2nd, 2020

  • 08:30-09:00: Welcome.
  • 09:00-12:00: Short introduction to DORIS.
    • 09:00-09:15: Origin of DORIS.
    • 09:15-09:45: Ground segment.
    • 09:45-10:00: Space segment.
    • 10:00-10:30: Analysis of DORIS data.
  • 10:30-11:00: Break.
  • 11:00-11:30: International DORIS Service – Organization & Products.
  • 11:30-12:15: DORIS & the ionosphere.
  • 12:00-13:00: Lunch.
  • 13:00-13:45: IDS Combination Center.
    • IDS combined solution (& coordinate time series).
    • IDS position & velocity solution.
  • 13:45-14:30: DORIS & Climate Change.
  • 14:30-15:15: DORIS & tectonics / volcanology.
  • 15:15-15:45: Break.
  • 15:45-16:30: DORIS & the Geocenter.
  • 16:30-17:00: Feedback on the DORIS Day.




Dates: Monday 30 September and Tuesday 1 October 2019

Local host: Pascale Ferrage (CNES)

Meeting location: CNES Paris les Halles - Headquarters, France

List of attendees


Claudio Abbondanza (NASA/JPL)
Zuheir Altamimi (IGN)
Mathis Blossfeld (DGFI-TUM)
Hugues Capdeville (CLS)
Alexandre Couhert CNES)
Konstantin Ebauer (INASAN)

Pascale Ferrage (CNES)
Richard Gross (NASA/JPL)
Sergei Kuzin (INASAN)
Frank G. Lemoine (NASA/GSFC)
Jean-Michel Lemoine (CNES)
Guilhem Moreaux (CLS)

Jerome Saunier (IGN)
Patrick Schreiner (GFZ)
Laurent Soudarin (CLS)
Petr Štěpánek (GOP)
Pascal Willis (IGN)


Other related event (invitation-only):

Governing Board meeting, Monday September 30, 9 am -12 am