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Magnetic Properties of Champ and Their Effects on In-orbit Calibration : Volume 2, Issue 1 (04/03/2013)

By Lühr, H.

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Book Id: WPLBN0003972827
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Magnetic Properties of Champ and Their Effects on In-orbit Calibration : Volume 2, Issue 1 (04/03/2013)  
Author: Lühr, H.
Volume: Vol. 2, Issue 1
Language: English
Subject: Science, Journal, Sensors
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Bock, R., Yin, F., & Lühr, H. (2013). Magnetic Properties of Champ and Their Effects on In-orbit Calibration : Volume 2, Issue 1 (04/03/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Deutsches GeoForschungsZentrum, GFZ, 14473 Potsdam, Germany. CHAMP has so far been the most successful magnetic field mission. For achieving that, special effort had to be invested in building a magnetically clean spacecraft. The magnetic moment of the spacecraft is about 1 Am2. In this article we introduce a new method that allows the determination of the magnetic moment during the mission from the average current strength of the magneto-torquers. In order to achieve precise field vector data, the readings of the fluxgate magnetometer are routinely calibrated against the absolute Overhauser measurements. A reanalysis of all the magnetic field data is performed which takes also into account small disturbances from the power system. Uncertainties of the final magnetic field data are estimated to be of the order of 0.1 nT.

Summary
Magnetic properties of CHAMP and their effects on in-orbit calibration

Excerpt
Lühr, H., Bock, R., and Rother, M.: CHAMP Magnetic Test Report, CH-GFZ-TR-2000, GFZ Technical Report, 2000.; Mandea, M., Holschneider, M., Lesur, V., and Lühr, H.: The Earth's magnetic field at the CHAMP satellite epoch, in: System Earth via Geodetic-Geophysical Space Techniques, edited by: Flechtner, F., Gruber, T., Güntner, A., Mandea, M., Rothacher, M., Schöne, T., and Wickert, J., Advanced Technologies in Earth Sciences, 475–526, doi:10.1007/978-3-642-10228-8_42, Springer-Verlag Berlin-Heidelberg, 2010.; Reigber, C., Lühr, H., and Schwintzer, P.: First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, Springer, Berlin-Heidelberg, 2003.; Reigber, C., Lühr, H., Schwintzer, P., and Wickert, J.: Earth Observation with CHAMP, Results from Three Years in Space, Springer, Berlin-Heidelberg, 2005.; Yin, F. and Lühr, H.: Recalibration of the CHAMP satellite magnetic field measurements, Meas. Sci. Technol., 22, 055101, doi:10.1088/0957-0233/22/5/055101, 2011.

 

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