Effects on the Geodetic-VLBI Measurables Due to Polarization Leakage in the Receivers

A. Bertarini1,  W. Alef2, B. E. Corey3,  A. Nothnagel1 and R. C. Walker4

1Institute for Geodesy and Geoinformation/Bonn University, Germany
2 Max Planck Institute for Radio AstronomyI/Bonn, Germany
3 Haystack Observatory, MIT, USA
4 National Radio Astronomy Observatory, USA

 Poster

Geodetic VLBI delivers baseline length and Earth orientation parameter measurements, which offer the most viable and precise way to study Earth crustal and core dynamics and to support space navigation.
Polarization leakages are one of the instrumental errors that decrease the precision of the measurements, but can be removed from the data. In this poster we present the principle underlying the corrections, observation strategy used to measure the leakages, the correlation process and  preliminary results.