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Radioastron» Project: Correlation Processing of the Earth-Space Interferometer Observations

Transactions of IAA RAS, issue 35, 38–45 (2015)

Keywords: Radioastron mission, program correlator, FX architecture, “Coherent” mode, Earth-to-Space VLBI, interferometer response.

Abstract

The main features of the Radioastron mission and correlation processing of the data obtained from Earth-to-Space interferometers are considered. The FX-Architecture Correlator is designed to take into consideration all peculiarities of observations with the help of an Earth-to-Space interferometer. It supports all currently available VLBI usable input/ output data formats along with the effective fringe search procedures by means of the ASL Locator software application. 1385 sessions of February 2012 to February 2014 data ( 75 % of the whole Radioastron data volume) are successfully processed and the results are transferred for analysis. The Space-to-Earth correlations are successfully detected at 32 % of the processed sessions and with the record baseline length of 345 000 km ( band), 295 000 km ( band) and 190 000 km ( band). For the time being the ASC correlator is the only world correlator capable to process VLBI data in Coherent mode supporting SC frequency/time synchronizing from the Earth based Hydrogen maser

Citation

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A. S. Andrianov, I. A. Guirin, V. E. Jarov, V. I .Kostenko, A. G. Rudnitsky, S. F. Likhachev, M. V. Shatskaya. Radioastron» Project: Correlation Processing of the Earth-Space Interferometer Observations // Transactions of IAA RAS. — 2015. — Issue 35. — P. 38–45. @article{andrianov2015, abstract = {The main features of the Radioastron mission and correlation processing of the data obtained from Earth-to-Space interferometers are considered. The FX-Architecture Correlator is designed to take into consideration all peculiarities of observations with the help of an Earth-to-Space interferometer. It supports all currently available VLBI usable input/ output data formats along with the effective fringe search procedures by means of the ASL Locator software application. 1385 sessions of February 2012 to February 2014 data ( 75 % of the whole Radioastron data volume) are successfully processed and the results are transferred for analysis. The Space-to-Earth correlations are successfully detected at 32 % of the processed sessions and with the record baseline length of 345 000 km ( band), 295 000 km ( band) and 190 000 km ( band). For the time being the ASC correlator is the only world correlator capable to process VLBI data in Coherent mode supporting SC frequency/time synchronizing from the Earth based Hydrogen maser}, author = {A.~S. Andrianov and I.~A. Guirin and V.~E. Jarov and V.~I. Kostenko and A.~G. Rudnitsky and S.~F. Likhachev and M.~V. Shatskaya}, issue = {35}, journal = {Transactions of IAA RAS}, keyword = {Radioastron mission, program correlator, FX architecture, “Coherent” mode, Earth-to-Space VLBI, interferometer response}, pages = {38--45}, title = {Radioastron» Project: Correlation Processing of the Earth-Space Interferometer Observations}, url = {http://iaaras.ru/en/library/paper/1060/}, year = {2015} } TY - JOUR TI - Radioastron» Project: Correlation Processing of the Earth-Space Interferometer Observations AU - Andrianov, A. S. AU - Guirin, I. A. AU - Jarov, V. E. AU - Kostenko, V. I. AU - Rudnitsky, A. G. AU - Likhachev, S. F. AU - Shatskaya, M. V. PY - 2015 T2 - Transactions of IAA RAS IS - 35 SP - 38 AB - The main features of the Radioastron mission and correlation processing of the data obtained from Earth-to-Space interferometers are considered. The FX-Architecture Correlator is designed to take into consideration all peculiarities of observations with the help of an Earth-to-Space interferometer. It supports all currently available VLBI usable input/ output data formats along with the effective fringe search procedures by means of the ASL Locator software application. 1385 sessions of February 2012 to February 2014 data ( 75 % of the whole Radioastron data volume) are successfully processed and the results are transferred for analysis. The Space-to-Earth correlations are successfully detected at 32 % of the processed sessions and with the record baseline length of 345 000 km ( band), 295 000 km ( band) and 190 000 km ( band). For the time being the ASC correlator is the only world correlator capable to process VLBI data in Coherent mode supporting SC frequency/time synchronizing from the Earth based Hydrogen maser UR - http://iaaras.ru/en/library/paper/1060/ ER -