It is pointed out that a new era in near-earth magnetic field measurements began with NASA's launch of Magsat in October 1979 into a twilight, sun-synchronous orbit with 96.76 deg inclination, 561-km apogee, and 352-km perigee. A cesium vapor and a fluxgate magnetometer were employed to measure the magnetic field. A measurement of the spacecraft attitude to 20 arcseconds was required to achieve 6 nT (nanotesla) accuracy in the component measurements. This was accomplished with the aid of two star cameras on board the spacecraft and a sun sensor attached to the vector magnetometer. Magsat remained in orbit until June 11, 1980. Magsat has conducted the first truly global geomagnetic survey since the studies performed by the Polar Orbiting Geophysical Observatory (POGO) satellites. A global vector survey was provided of the main geopotential field and lower altitude measurements of crustal anomalies were conducted. Details concerning the availability of these data are discussed.


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    Titel :

    Magsat data availability


    Beteiligte:
    Langel, R. A. (Autor:in)

    Erscheinungsdatum :

    1982-01-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Combined Interpretation of MAGSAT and Surface Geophysical Data

    Singh, R. P. / Rastogi, A. / Adam, A. et al. | British Library Conference Proceedings | 1993



    Attitude transfer assembly design for MAGSAT

    Collyer, P. W. / Freund, N. P. | NTRS | 1976



    Combined interpretation of MAGSAT and surface geophysical data

    Singh, Ramesh P. / Rastogi, Anupma / Adam, A. | Elsevier | 1993