VLBI Activities in the Past 10 Years at Tsukuba 32 m VLBI Station and Correlation Center

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  • つくば32m VLBI観測局・相関局における10年間のVLBI活動

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Tsukuba 32 m VLBI station of Geographical Survey Institute (GSI) was constructed in 1998, and it has been operational for more than ten years. Tsukuba 32m VLBI station is a target of the azimuth from origin for horizontal coordinates in Japan and a core station of the domestic VLBI observation by GSI. In the past 10 years, we have improved the observation system for advancement of VLBI observation, such as update of the recording system and introduction of the data transfer system via high-speed network. The number of the sessions at Tsukuba station reached 190 sessions per year in 2008, and the station is important for International VLBI Service for Geodesy and Astrometry (IVS). GSI also has Tsukuba VLBI correlation center, and has processed the data of domestic and international VLBI sessions. The correlation system was shifted from hardware correlation system to software system in 2005, and the software system has often updated since then. Now, Tsukuba VLBI correlation center processes the data of more than 100 sessions in a year.

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