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## Efficiency of Replacing the Analog DAS by the New Digital Signal Processing R1002M System at the VLBI Network "Quasar" Radio Telescopes

Transactions of IAA RAS, issue 23, 218–223 (2012)

Keywords: VLBI, signal converters, video converter, VLBI observations, the signal / noise ratio, measurement, delay

### Abstract

Results of VLBI observations, which have been carried out by "Quasar" network using the usual analog DAS are compared with the new R1002M systems with digital base band converters. Using R1002M system allows to increase the signal-to-noise of fringe amplitude and to raise the accuracy of multi band delay.

### Citation

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L. V. Fedotov, E. V. Nosov, A. S. Berdnikov, S. A. Grenkov, D. A. Marshalov, A. V. Krokhalev , N. E. Koltsov. Efficiency of Replacing the Analog DAS by the New Digital Signal Processing R1002M System at the VLBI Network "Quasar" Radio Telescopes // Transactions of IAA RAS. — 2012. — Issue 23. — P. 218–223. @article{fedotov2012, abstract = {Results of VLBI observations, which have been carried out by "Quasar" network using the usual analog DAS are compared with the new R1002M systems with digital base band converters. Using R1002M system allows to increase the signal-to-noise of fringe amplitude and to raise the accuracy of multi band delay.}, author = {L.~V. Fedotov and E.~V. Nosov and A.~S. Berdnikov and S.~A. Grenkov and D.~A. Marshalov and A.~V. Krokhalev and N.~E. Koltsov}, issue = {23}, journal = {Transactions of IAA RAS}, keyword = {VLBI, signal converters, video converter, VLBI observations, the signal / noise ratio, measurement, delay}, pages = {218--223}, title = {Efficiency of Replacing the Analog DAS by the New Digital Signal Processing R1002M System at the VLBI Network "Quasar" Radio Telescopes}, url = {http://iaaras.ru/en/library/paper/777/}, year = {2012} } TY - JOUR TI - Efficiency of Replacing the Analog DAS by the New Digital Signal Processing R1002M System at the VLBI Network "Quasar" Radio Telescopes AU - Fedotov, L. V. AU - Nosov, E. V. AU - Berdnikov, A. S. AU - Grenkov, S. A. AU - Marshalov, D. A. AU - Krokhalev, A. V. AU - Koltsov, N. E. PY - 2012 T2 - Transactions of IAA RAS IS - 23 SP - 218 AB - Results of VLBI observations, which have been carried out by "Quasar" network using the usual analog DAS are compared with the new R1002M systems with digital base band converters. Using R1002M system allows to increase the signal-to-noise of fringe amplitude and to raise the accuracy of multi band delay. UR - http://iaaras.ru/en/library/paper/777/ ER -