Advanced Technologies in Earth Sciences pptx

[...]... frank.flechtner@gfz-potsdam.de F Flechtner et al (eds.), System Earth via Geodetic-Geophysical Space Techniques, Advanced Technologies in Earth Sciences, DOI 10.1007/978-3-642-10228-8_1, C Springer-Verlag Berlin Heidelberg 2010 3 4 F Flechtner Fig 1 CHAMP key instrumentation Not shown is the LRR and the reflectometry antenna on the nadir side and the GPS limb sounding antenna array on the back side The S-band antenna... GFZ ISDC can be found in Ritschel et al (this issue) 10 F Flechtner In order to obtain highly accurate and reliable orbit products for a wide range of applications (gravity field modelling, radio occultation analysis or TerraSAR-/ TanDEM-X baseline determination) GFZ continuously works on improvements of its data processing systems In Michalak and König details of the GPS phase wind-up correction and... orientation of the transmitting antenna A test version of the attitude model including midnight/noon, shadow and post-shadow turns is already built and will be implemented in the operational data processing software after successful testing It was shown that neglecting the attitude model and assuming geometric attitude as the nominal one can lead to large yaw differences exceeding even one full rotation... Research Centre for Geosciences (http://isdc.gfzpotsdam.de) is the online service access point for all manner of geoscientific geodata, its corresponding metadata, scientific documentation and software tools Initially, there have been different project driven and independent parallel operating ISDCs, such as the CHAMP, GRACE or GNSS ISDCs As a consequence, users who were interested in e.g orbit products... for GeoInformation Technology, Telegrafenberg, 14473 Potsdam, Germany, roko@gfz-potsdam.de Ina Krasbutter Institute of Geodesy and Geoinformation, University of Bonn, Bonn, Germany, ina.krasbutter@geod.uni-bonn.de Enrico Kurtenbach Institute of Geodesy and Geoinformation, University of Bonn, 53115 Bonn, Germany, enrico@geod.uni-bonn.de Jürgen Kusche University of Bonn, Institute of Geodesy and Geoinformation,... demonstrated, that reversing the block IIR X-axis direction to match the convention for block II/IIA has no in uence on the orbit and clocks in case when integer ambiguity fixing is applied Half of the phase cycle difference is absorbed by the ambiguities Correct application of the phase wind-up requires additionally correct modelling of the GPS satellite attitude (in particular yaw rotation) as it in uences the... and CHAMP) projects in this issue 2 Gravity Field Determination from Analysis of High-Low SST Data With the launch of CHAMP on 15 July 2000, a new era in Earth gravity field recovery from space began High-low satellite-to-satellite (hlSST) using the American Global Positioning System (GPS) and on-board accelerometry combined with a low altitude and almost polar orbit (87.3◦ inclination) made CHAMP the... demonstrated by the inclusion of a test phase for the six COSMIC satellites The 3D position accuracy of the GPS RSOs obtained from comparisons to the IGR orbits provided by the International GNSS Service (IGS) is 14 cm and was recently improved to 7–8 cm as a result of the introduction of integer ambiguity fixing into the processing It can be concluded, that the GPS RSO accuracy in any direction (radial,... status and calibration In: Reigber Ch, Lühr H, Schwintzer P (eds.), First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, Springer, Berlin, pp 212–219 Grunwaldt L, Meehan T (2003) CHAMP orbit and gravity instrument status In: Reigber Ch, Lühr H, Schwintzer P (eds.), First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, Springer, Berlin, pp 3–10 Kim J (2000)... born In conclusion, the requirements and constraints for the development of an ISDC portal were: B Ritschel (B) Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Centre for GeoInformation Technology, Telegrafenberg, 14473 Potsdam, Germany e-mail: bernd.ritschel@gfz-potsdam.de F Flechtner et al (eds.), System Earth via Geodetic-Geophysical Space Techniques, Advanced Technologies in Earth . alt="" Advanced Technologies in Earth Sciences Editors: L. Stroink, Germany V. Mosbrugger, Germany G. Wefer, Germany For further volumes: http://www.springer.com/series/8384 Frank. Thomas Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) Preface Our planet is currently experiencing substantial