The compact spherical coil (CSC) vector-feedback magnetometer on the Danish Oersted geomagnetic mapping satellite underwent extensive calibrations and verifications prior to integration and launch. The theory of the 'thin shell' calibration procedure is introduced. Spherical harmonic modelling was developed and tested over several years and used for Oersted and other missions at test facilities in Europe, the United States and the Republic of South Africa. The verification of the test coil system using an Overhauser absolute scalar proton magnetometer is explained and the overall calibration results are given. The temperature calibrations are explained and reported on. The overall calibration model standard deviation is about 100 pT rms. Comparisons with the later in-flight calibrations show that, except for the unknown satellite offsets, an agreement within 4 nT was obtained. Finally an rf interference between the CSC and the Overhauser magnetometer is discussed, which may account for some of this discrepancy.


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    Title :

    Oersted pre-flight magnetometer calibration mission


    Contributors:
    Risbo, T. (author) / Brauer, P. (author) / Merayo, J.M.G. (author) / Nielsen, O.V. (author) / Petersen, J.R. (author) / Primdahl, F. (author) / Richter, I. (author)

    Published in:

    Publication date :

    2003


    Size :

    15 Seiten, 10 Bilder, 8 Tabellen, 26 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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