Add to ORKGThis report gives an overview of the “Politecnico di Milano” (PMD) VLBI Analysis Center activities during 2011 and briefly outlines the plans for 2012. The PMD AC processes IVS EUROPE sessions for baseline length variation computation and determination of time series coordinates of VLBI antennas. The AC performs also research and software development aimed to improve time series analysis. This work was developed within the context of comparison of VLBI and GPS (Global Positioning System) techniques and with respect to the geophysical models available in the European area. Another important task concerns the observational part; in particular several tests have been carried out to demonstrate the possibility of detecting GNSS satellite...