Calibration techniques for magnetometers implementing on-board de-spinning algorithms

Autor: Elizabeth Lucek, Patrick Brown, A. Balogh, T. Oddy, Malcolm Dunlop, Chris Carr, J. Gloag
Rok vydání: 2008
Předmět:
Zdroj: Advances in Space Research. 41:1571-1578
ISSN: 0273-1177
DOI: 10.1016/j.asr.2007.09.028
Popis: The Fluxgate Magnetometer experiments on-board the European Space Agency’s four spacecraft Cluster Mission have the capability to store sampled magnetic field vectors in the instrument memory, either as a full resolution ‘event capture’ or as spin-resolution vectors transformed into a non-spinning co-ordinate system (de-spun). The latter capability has ensured a dataset is available which extends the partial orbital coverage achieved during nominal operations in the first years of operation. The on-board de-spin is achieved using a Walsh function with Haar coefficients and allows for up to 27 h additional data per non-coverage interval. A number of commissioning orbits were used to verify the accuracy of data collected by the de-spin mode, whereby individual spacecraft were operated separately in a number of standard normal sampling and de-spin mode combinations. Up to the present time, this data has not been available to the Cluster community. We present results here comparing the performance of the on-board de-spin algorithm versus the normal sampling modes over a number of boundary layer crossings, describe the techniques used for calibration and timeline recovery, and outline the context in which the data may be usable in future studies.
Databáze: OpenAIRE
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