@inproceedings{Georgescu:2006,
author = {Georgescu, E and Vaith, H and Fornacon, KH and Auster, U and Balogh, A and Carr, C and Chutter, M and Dunlop, M and Foerster, M and Glassmeier, KH and Gloag, J and Paschmann, G and Quinn, J and Torbert, R},
pages = {535--541},
title = {Use of EDI time-of-flight data for FGM calibration check on cluster},
year = {2006}
}

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TY  - CPAPER
AB  - The four Cluster satellites launched in summer 2000 carry flux-gate magnetometers (FGM), which measure the magnetic field vector. The satellites also carry electron drift instruments (EDI) that measure the gyration time of electrons perpendicular to the magnetic field. The gyration time is related through a universal constant to the magnetic field magnitude and is hence an absolute measure of it. The knowledge of the field magnitude can be used to verify the magnetometer calibration or to carry out a scalar calibration of FGM, similarly to near-Earth space missions where proton magnetometers provide this information. The resulting increased accuracy of the magnetic field measurement on the four spacecraft enhances the value of the multipoint measurements on Cluster by reducing the uncertainties in deriving the differential quantities such as the curl of the magnetic field. In this paper the errors in the measurements made by FGM and EDI are discussed and a comparison of the measurements is presented. The conclusion is that the absolute error of the magnetic field measurement is about 0.1 nT for fields below 100 nT and less than 0.1% for fields above.
AU  - Georgescu,E
AU  - Vaith,H
AU  - Fornacon,KH
AU  - Auster,U
AU  - Balogh,A
AU  - Carr,C
AU  - Chutter,M
AU  - Dunlop,M
AU  - Foerster,M
AU  - Glassmeier,KH
AU  - Gloag,J
AU  - Paschmann,G
AU  - Quinn,J
AU  - Torbert,R
EP  - 541
PY  - 2006///
SN  - 0379-6566
SP  - 535
TI  - Use of EDI time-of-flight data for FGM calibration check on cluster
ER  - 

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