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dorismail               07-Jan-2011 19:13:15 Message No 0722
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Author: Urs Hugentobler <urs.hugentobler@bv.tu-muenchen.de>
Subject: G2.4 session on orbit dynamics at EGU2011


Dear Colleagues,

it is still possible to submit abstracts to the session G2.4 on orbit 
dynamics at EGU2011 in Vienna. The deadline for abstract submission ends 
next Monday, January 10, 24:00 (caution: time zone not specified).

With best regards and best wishes for the new year
Marek Ziebart
Urs Hugentobler


Marek Ziebart schrieb:
>
> With apologies for cross posting, please consider submitting an 
> abstract for the following session at the European Geosciences Union 
> General Assembly, Vienna, 2011:
>
>  
>
> http://meetingorganizer.copernicus.org/EGU2011/session/7108
>
>  
>
> G2.4
>
> Space vehicle dynamics as applied to precise orbit determination and 
> validation: pushing the edge of the envelope
>
>  
>
> Convener: Marek Ziebart 
>
> Co-Convener: Urs Hugentobler 
>
> Abstract Submission
>
> Convener Login
>
>  
>
>  
>
> The accuracy of satellite precise orbit determination underpins 
> fundamentally many applications of geodesy to earth and other 
> planetary science. Our current principal challenge is to determine 
> orbits at the centimetre, or even sub-centimetre, level. New 
> constellations of GNSS are being launched offering new technical 
> hurdles and opportunities; improved gravity field models are available 
> through the extended analysis of GRACE data and new LEO 
> position-critical missions (e.g. Jason-2, GOCE, CRYOSAT-2) are 
> currently on orbit. Reprocessing campaigns and improved observable 
> modelling offer outstanding experimental data to test approaches to 
> orbit determination. However, time series analysis of estimated 
> tracking station coordinates indicates significant energy in 
> observable residuals at draconitic and beta-prime (solar) related 
> periods. Modelling of satellite surface forces is still problematic. 
> Many issues need to be explored by the community but at the same time 
> we have strong indication of emerging techniques and models that stand 
> to improve orbit determination against a range of metrics.
>
>  
>
> In particular we encourage contributions to the session that make 
> accessible the technical challenges of orbit determination and 
> modelling to the wider community, quantifying the nature of the impact 
> of dynamics errors on geodetic parameters and the terrestrial 
> reference frame.
>
>  
>
> This session solicits contributions in the following areas: (1) 
> precise orbit determination and validation; (2) impacts of new gravity 
> field models on orbit determination; (3) satellite surface force 
> modelling; (4) advances in modelling atmospheric density and in 
> atmospheric gravity; (5) advances in modelling earth radiation fluxes 
> and their interaction with space vehicles; (6) analysis of changes in 
> geodetic parameters/earth models resulting from improved force 
> modelling/orbit determination methods; (7) relevant improvements in 
> observable modelling for all tracking systems, e.g. SLR, DORIS, GNSS 
> and their impact upon orbit determination; (8) the impact of improved 
> clock modelling methods/space clocks on precise orbit determination; 
> (9) advances in understanding and modelling satellite attitude 
> behaviour; (10) orbit determination for other solar system missions; 
> (11) insights into GPS long term orbit behaviour through the IGS 
> re-processing campaigns; (12) insights into LEO long term orbit 
> behaviour through the Jason/TOPEX reprocessing campaigns
>
>  
>
> We look forward to seeing you in Vienna,
>
> Marek and Urs
>
>  
>
>  
>
> Marek Ziebart
>
> Professor of Space Geodesy
>
> Director, Space Geodesy and Navigation Laboratory
>
> Vice Dean for Research, Faculty of Engineering Sciences
>
>  
>
> University College London,
>
> Department of Civil, Environmental and Geomatic Engineering
>
> Gower Street, London, WC1E 6BT
>
>  
>
> EMAIL:  marek@cege.ucl.ac.uk <mailto:marek@cege.ucl.ac.uk>
>
> TEL: +44  (0) 20 7679 1359 (Direct Dial)
>
> INTERNAL:  31359
>
> FAX: +44 (0) 20 7679 3042
>
> SKYPE: marek.ziebart
>
>  
>
> WEB: http://www.cege.ucl.ac.uk/
>
> OFFICE: Room 118, 1st floor, Chadwick Building
>
>  
>
> "A problem well stated is a problem half solved."
>
> - Charles Franklin Kettering (1876-1958)
>
>  
>
>  
>


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