13-19 March 2016
Africa/Johannesburg timezone
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New generation VLBI: Intraday UT1 estimations

Presented by Prof. Alexander IPATOV on 15 Mar 2016 from 10:15 to 10:30
Type: Oral Presentation
Track: 2: VGOS Strategies and Expected Results


IAA finished work on creation of new generation radio interferometer with two VGOS antennas at the Badary and Zelenchukskaya co-location stations. The series of 48 one base 1 hour VLBI sessions (up to four sessions per day) were performed from 04 Nov to 18 Nov 2015. Observations were carried out using wideband S/X receivers, 3 X-band and 1 S-band 512 MHz channels at one or two circular polarizations. Sessions consisted of about 60 scans with 22 seconds minimum scan duration. Stations broadband acquisition systems generate 1.5-3 TB data per session which are transferred via Internet to the IAA FX correlator. Accuracy of group delay in single channel was 10-20 ps what allows to use every single channel observations for geodetic analysis without synthesis. 156 single channel NGS-cards were obtained in total. UT1-UTC estimations give 19 µs RMS of differences when comparing with the IERS finals.

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