[IGSMAIL-8396] EGU24, Session G2.1: Precise Orbit Determination for Geodesy and Earth Science

[Adrian Jäggi]

Dear colleagues,

we would like to draw your attention to the session “G2.1 Precise Orbit 
Determination for Geodesy and Earth Science” organized at the upcoming 
General Assembly of the European Geosciences Union, taking place from 
April 14-19, 2024. The EGU24 aims to bring together geoscientists from 
all over the world to one meeting covering all disciplines of the Earth, 
planetary, and space sciences. The EGU aims to provide a forum where 
scientists, especially early career researchers, can present their work 
and discuss their ideas with experts in all fields of geoscience.

G2.1 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. Four constellations of GNSS satellites are 
available and numerous position-critical missions (e.g. altimetry, 
gravity, SAR and SLR missions) are currently in orbit. Altogether, 
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 from, 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; (10) 
simulation studies for the planned co-location of geodetic techniques in 
space mission GENESIS.

Please consider submitting an abstract to this dedicated orbit session. 
The deadline for abstract submission is January 10, 2024 at 13:00 CET. 
We are looking forward to your contribution.

On behalf of the convenors of session G2.1,
Adrian Jäggi

Co-conveners: Alexandre Couhert, Jose van den IJssel, Oliver 
Montenbruck, Urs Hugentobler

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  Adrian Jaeggi                     Astronomical Institute, University of Bern
  adrian.jaeggi at unibe.ch             Sidlerstrasse 5, CH-3012 Bern, Switzerland
  http://www.aiub.unibe.ch/          Tel: +41 31 6848596
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