M. Massi et al., BASE-LINE ERRORS IN EUROPEAN VLBI NETWORK MEASUREMENTS .3. THE DOMINANT EFFECT OF INSTRUMENTAL POLARIZATION, Astronomy and astrophysics, 318(1), 1997, pp. 32-34
In this paper, we compare the results of a VLBI observation involving
7 European telescopes with the model by Massi et al. 1996 for the cont
ribution of the instrumental polarization to the closure phase. The ex
cellent agreement found between model predictions and data proves that
the systematic error present in European VLBI data is in fact due to
the high instrumental polarization of some of the telescopes and can b
e removed by data processing.