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  1. No Access

    Chapter

    Photonic Crystals from Macroporous Silicon

    Regular, hexagonally-ordered macropore arrays have been obtained by photo-electrochemical etching of prepatterned silicon substrates. For typical pore diameters of about 1 μm, aspect ratios of about 100 have b...

    R. B. Wehrspohn, A. Birner, J. Schilling… in Photonic Crystals and Light Localization i… (2001)

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    Chapter and Conference Paper

    Comparison of Downward Continuation Methods of Airborne Gravimetry Data

    The determination of the geoid represents a central task in geodesy. In this matter airborne gravimetry provides a fast and reliable method for geoid determination especially for those regions, which are diffi...

    F. Mueller, T. Mayer-Guerr in A Window on the Future of Geodesy (2005)

  3. No Access

    Chapter and Conference Paper

    Downward Continuation of Airborne Gravimetry and Gradiometry Data Using Space Localizing Spline Functions

    Airborne gravimetry is capable of filling the gap between the long wavelength parts of the gravity field provided by the satellite missions such as CHAMP or GRACE and the short wavelength parts derived from te...

    F Mueller, T Mayer-Gürr, A.A Makhloof in Observing our Changing Earth (2009)