Function and Responsibilities:

Research Interests:

    * Very Long Baseline Interferometry (VLBI)

    * Applications of geodetic and astrometric VLBI

    * Terrestrial and celestial reference systems and frames, geodetic datum

    * Theory of Earth rotation

    * Combination of space geodetic techniques

    * Analysis and modeling of VLBI observations, in particular of neutral atmosphere and ionosphere

    * Development of analysis software for VLBI 'group delay' and 'dispersive delay' observables

    * Probing the solar corona by VLBI

    * Measurements of artificial radio sources with VLBI equipment