Activities of the IVS Analysis Center at BKG in 2003

摘要

The main analysis activities at the International VLBI Service (IVS) Analysis Center at BKG can be divided into the processing of the correlator output, the producing of two Earth Orientation Parameter (EOP) time series for submission to the IVS, the regular submissions of tropospheric parameters for the IVS-R1 and IVS-R4 sessions, and the generating of daily SINEX (Solution INdependent EXchange format) files for the IVS. For the IVS products Terrestrial Reference Frame (TRF) and Celestial Reference Frame (CRF) quarterly updated solutions are computed. The main features of these works are explained and some results are compared to the official IERS (International Earth Rotation and Reference Systems Service) products. A UT1 time series derived from about 1-hour measurements of the baseline TSUKUBA-WETTZELL was generated and first results of the data processing were compared with the results of the official BKG UT1 time series derived from data of the baseline KOKEE-WETTZELL. The measurements of the new station TIGOCONC (Conception, Chile) have been used in the processing for about 1.6 years. So first velocity information about this station could be estimated from the station coordinate series. The use of unstable sources identified by Martine Feissel-Vernier [1] was tested and comparisons were made with the results of the routinely used procedure for the EOP determination of the BKG VLBI group.