[IGSMAIL-7999] EGU2021, Session G2.4: Precise Orbit Determination for Geodesy and Earth Science

[Adrian Jaeggi]

Dear colleagues,

We would like to draw your attention to the session “G2.4 Precise Orbit 
Determination for Geodesy and Earth Science” organized at the upcoming 
virtual General Assembly of the European Geosciences Union (vEGU21), 
taking place from April 19-30, 2021.

Session description:

Precise orbit determination is of central importance for many 
applications of geodesy and earth science. The challenge is to determine 
satellite orbits in an absolute sense at the centimeter or even 
sub-centimeter level, and at the millimeter or even sub-millimeter level 
in a relative sense. New constellations of GNSS satellites are currently 
being completed and numerous position-critical missions (e.g. altimetry, 
gravity, SAR and SLR missions) are currently in orbit. All together 
outstanding data are available offering new opportunities to push orbit 
determination to the limit and to explore new applications.

This session aims to make accessible the technical challenges of orbit 
determination and modelling to the wider community and to quantify the 
nature of the impact of dynamics errors on the various applications. 
Contributions are solicited but not limited to the following areas: (1) 
precise orbit determination and validation; (2) satellite surface force 
modelling; (3) advances in modelling atmospheric density and in 
atmospheric gravity; (4) advances in modelling earth radiation fluxes 
and their interaction with space vehicles; (5) analysis of changes in 
geodetic parameters/earth models resulting from improved force 
modelling/orbit determination methods; (6) improvements in observable 
modelling for all tracking systems, e.g. SLR, DORIS, GNSS and their 
impact on orbit determination; (7) advances in combining the different 
tracking systems for orbit determination; (8) the impact of improved 
clock modelling methods/space clocks on precise orbit determination; (9) 
advances in modelling satellite attitude.

Please consider submitting an abstract to this dedicated orbit session. 
The deadline for abstract submission is January 13, 2021 at 13:00 CET. 
We are looking forward to your contribution.

On behalf of the convenors of session G2.4,
Adrian Jäggi

Co-conveners: Alexandre Couhert, Urs Hugentobler, Heike Peter, Jose van 
den IJssel

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  Adrian Jaeggi                     Astronomical Institute, University of Bern
  adrian.jaeggi at aiub.unibe.ch        Sidlerstrasse 5, CH-3012 Bern, Switzerland
  http://www.aiub.unibe.ch/          Tel: +41 31 6318596    Fax: +41 31 6313869
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