NATIONAL REPORT OF THE FEDERAL REPUBLIC OF ... - IAG Office

General remarks
The continuous and precise observation of satellite orbits
by the Global Navigation Satellite Systems (GNSS) enabled
the development of alternative Earth system analysis
techniques and even new applications in the Earth system
research. Innovative sensor types, such as accelerometers,
star trackers and improved tracking receivers as well as new
observation types such as precise intersatellite range- or
range-rate measurements provided the basis for a precise
determination of absolute and relative orbits of satellites
and satellite pairs, respectively. Very precise kinematic or
reduced dynamic orbits derived from these measurements
are required to study sea level change and ice cover variations
based on the observations of altimetry satellites,
atmospheric sounding by GNSS occultation measurements
or the detection of mass transports and the mass distribution
in the Earth system by a precise determination of the
stationary and time variable gravity field. Therefore the
development of improved orbit determination strategies was
a topic of research during the last four years.
Bibliography
BAUR O., GRAFAREND E. (2005): Orbital rotations of a satellite.
Case study: GOCE. Artificial Satellites 40 (2005) 87-107
DONNER G. (2004): Untersuchungen zur Prädiktion von Positionen
und zur konsistenten Berechnung von Geschwindigkeitsvektoren
künstlicher Erdsatelliten, Diploma thesis, University
Bonn
GÖBEL G. (2004): Entwicklung eines Programmes zur dynamischen
und kinematischen Bahnbestimmung, basierend auf
GPS- und Laserbeobachtungen, Diploma thesis, University
Bonn
GÖTZELMANN M. (2003): Short-Arc Bahnanpassung bei niedrig
fliegenden Satelliten, Diploma thesis, Technical University
Stuttgart
GÖTZELMANN M., KELLER W., REUBELT T. (2006): Gross error
compensation for gravity field analysis based on kinematic
orbit data. Journal of Geodesy 80 2006, 184-198, DOI
10.1007/s00190-006-0061-9
GRUBER C., TSOULIS D., SNEEUW N. (2005): CHAMP accelerometer
calibration by means of the equation of motion and
an a-priori gravity model. Zeitschrift für Vermessungswesen
130 (2005) 92-98
Satellite Orbit Modelling
K. H. ILK 1 , M. ROTHACHER 2 , J. DOW 3
1 Karl Heinz Ilk: Institut für Geodäsie und Geoinformation, Universität Bonn, Nussallee 17, D-53115 Bonn, Germany, Tel. +49 -
228 - 732629, Fax +49 - 228 - 733029, e-mail ilk@geod.uni-bonn.de
2 Markus Rothacher: GeoForschungsZentrum Potsdam (GFZ), Department 1: Geodesy & Remote Sensing, Telegrafenberg,
D-14473 Potsdam, Germany, Tel. +49 - 331 - 2881100, Fax +49 - 331 - 2881111, e-mail rothacher@gfz-potsdam.de
3 John M. Dow: European Space Operations Centre, Orbit and Altitude Div., Robert-Bosch-Str. 5, D-64293 Darmstadt, Germany,
Tel. +49 - 6151 - 902272, Fax +49 - 6151 - 902271, e-mail John.Dow@esa.int
123
MICHALAK G., WICKERT J., KÖNIG R., ROTHACHER M. (2007):
Precise satellite orbit determination for GPS radio occultation
in near-real time (NRT), EGU General Assembly,
EGU2007-A-08740, Vienna, Austria
MICHALAK G., WICKERT J., KÖNIG R., ROTHACHER M. (2007):
Precise orbit determination of COSMIC/Formosat-3
satellites for radio occultations, EGU General Assembly,
EGU2007-A-08402, Vienna, Austria
ROTHACHER M., MADER G. (2003): Receiver and satellite antenna
phase center offsets and variations. In: Tetreault P, Neilan
R, Gowey K (eds) Proc IGS 2002 Network, Data and
Analysis Centre Workshop, Ottawa, Canada, pp 141-152,
http://igscb.jpl.nasa. gov/igscb/resource/pubs/02_ott/session
_8.pdf
ROTHACHER M., SVEHLA D. (2003): Impact of LEO satellites on
global GPS solutions. Geophysical Research Abstracts:
EGS-AGU-EUG Joint Assembly, European Geophysical
Society, Nice (Hrsg.), 2003, 5, 386. 1029-7006
SCHMID R., ROTHACHER M. (2003): Estimation of elevationdependent
satellite antenna phase center variations of GPS
satellites. J Geod 77(7-8): 440-446, DOI: 10.1007/s00190-
003-0339-0, http://dx.doi.org/10.1007/s00190-003-0339-0
SCHMID R., MADER G., HERRING T. (2005): From relative to
absolute antenna phase center corrections. In: Meindl M
(ed) Proc IGS 2004 Workshop and Symposium, Bern,
Switzerland, pp 209-219 http://igscb.jpl.nasa.gov/igscb/
resource/pubs/04_rtberne/Session10_1.pdf
SCHMID R., ROTHACHER M., THALLER D., STEIGENBERGER P.
(2005): Absolute phase center corrections of satellite and
receiver antennas: Impact on global GPS solutions and
estimation of azimuthal phase center variations of the
satellite antenna. GPS Sol 9(4): 283-293, DOI: 10.1007/
s10291-005-0134-x, http://dx.doi.org/10.1007/s10291-005-
0134-x
STEIGENBERGER P., ROTHACHER M., DIETRICH R., FRITSCHE M.,
RÜLKE A., VEY S. (2006): Reprocessing of a global GPS
network. Journal of Geophysical Research, American Geophysical
Union (Hrsg.), 2006, 111, B05402, 2006. doi: 10.
1029/2005JB003747
SVEHLA D., ROTHACHER M. (2003): CHAMP double-difference
kinematic POD with ambiguity resolution. First CHAMP
Mission Results for Gravity, Magnetic and Atmospheric
Studies, Reigber Ch., Lühr H., Schwintzer P. (Hrsg.), 70-77
Springer-Verlag, Berlin, Heidelberg, 2003. 3-540-00206-5.
SVEHLA D., ROTHACHER M. (2003): Kinematic and Reduced–
Dynamic Precise Orbit Determination of Low Earth
Orbiters. Advances in Geosciences, 1, 1, 47-56, 2003