Reference : Derivation of angular velocities of the GRACE satellite formation from the star camer...

	Document type :	Scientific congresses, symposiums and conference proceedings : Unpublished conference
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/10993/14257

Title :	Derivation of angular velocities of the GRACE satellite formation from the star camera data
Language :	English
Author, co-author :	Bandikova, T. [> >]
	Weigelt, Matthias [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
	van Dam, Tonie [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
	Flury, J. [> >]
Publication date :	Jun-2013
Peer reviewed :	No
On invitation :	No
Audience :	International
Event name :	VIII Hotine-Marussi Symposium on Mathematical Geodesy
Event date :	from 17-06-2013 to 21-06-2013
Event organizer :	International Association of Geodesy
Event place (city) :	Rome
Event country :	Italy
Abstract :	[en] The presentation discusses possibilites to derive common frame angular velocities from the star cameras in the GRACE system. Generally the star cameras measure the rotation of each satellite independently from the other satellite. However, common frame rotations are also needed for various applications. Specifically in this presentation we discuss the application to a variant of the differential gravimetry approach. In this, angular rates around the crosstrack component of the so-called instantaneous relative reference frame are needed. The latter is a common reference frame formed by the inter-satellite connection of the two GRACE satellites. We will quantify the accuracy demands on the derivation of the angular velocities and discuss the possibilites to meet these demands with existing star camera observations. We will also give an outlook on new possibilites in the determination of the orientation and the derivation of angular velocities offered by the laser ranging instrument which will be used in the GRACE Follow-On mission.
Permalink :	http://hdl.handle.net/10993/14257
Commentary :	Oral presentation

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