Proc. IAU volume 13, issue S336, P439-442 2017 DOI: 10.1017/s1743921317010560 View full text
M. Rioja, R. Dodson, G. Orosz, H. Imai

Abstract: The arrival of the Square Kilometer Array (SKA) will revitalise all aspects of Very Long Baseline Interferometry (VLBI) astronomy at the lower frequencies.In the last decade there have been huge strides towards routinely achieving high precision VLBI astrometry at frequencies dominated by the tropospheric contributions, most notably at 22GHz, using advanced phase referencing techniques. Nevertheless to increase the capability for high precision astrometric measurements at low radio frequencies (<8 GHz) an eff…

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