Plans for the Vienna VLBI Software VieVS

A new VLBI (Very Long Baseline Interferometry) data analysis software (called Vienna VLBI Software VieVS) is developed at the Institute of Geodesy and Geophysics in Vi- enna taking into consideration all present and future VLBI2010 requirements, e.g. phase delay solutions and a significantly denser observation schedule. The programming language Matlab is used, which considerably eases the programming efforts because of many built-in functions and tools. Matlab is the high-end programming lan- guage of the students at Vienna University of Technology and at many other institutes world- wide. Thus, the new software will attract stu- dents and scientists to get interested in VLBI and to contribute to VLBI analysis. Together with the National Institute of Information and Com- munications Technology (NICT, Japan) phase delay solutions will be implemented in VieVS and initial steps will be taken to equip the soft- ware with tools for spacecraft tracking and space VLBI. Furthermore, the gap existing between the correlator output and the presently used Occam software will be closed in the Vienna VLBI soft- ware. The common efforts will contribute to the new specification of the VLBI data format, which is defined within Working Group 4 on VLBI Data Structure of the International VLBI Service for Geodesy and Astrometry (IVS).