Modelling the Earth's Main Magnetic Field by the spinning Astrid-2 satellite

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    Abstract

    The Swedish micro-satellite Astrid-2 was successfully launched into a near polar orbit last December 98. Despite the fact that its primary mission was the research of Auroral phenomena, the magnetic instrumentation has been designed to accomplish high resolution vector field magnetic measurements and therefore the mapping of the Earth's magnetic field may be possible. The spinning of the spacecraft about a certain axis makes the stabilisation in space possible. This fact and the well distributed data over the globe makes the magnetic data well suited for the estimation of the magnetic field model at the spacecraft altitude (circa 1000km). Several methods for field modelling are presented in this paper with the assumption that the direction of the spin axis is nearly constant. In any case the orientation of the magnetometer is to bedetermined simultaneously with the instrument calibration and main field model coefficients. Hence, apart from the scientific use of the magnetic data, the attitude recovery of the spacecraft may be estimated with more precision.
    Original languageEnglish
    JournalEos Trans. AGU, Fall Meet. Suppl.
    Volume80
    Issue number17
    Pages (from-to)F892
    Publication statusPublished - 1999
    EventAGU Fall Meeting 1999 - San Francisco
    Duration: 1 Jan 1999 → …

    Conference

    ConferenceAGU Fall Meeting 1999
    CitySan Francisco
    Period01/01/1999 → …

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