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The multifrequency radioheliograph

S. V. Lesovoi, A. T. Altyntsev, E. F. Ivanov, A. V. Gubin

Transactions of IAA RAS, issue 24, 31–45 (2012)

Keywords: radioheliograph, antennas with a wideband feed system, digital receivers, correlator, frequency converter

Abstract

The 10-antenna prototype of the multifrequency Siberian radioheliograph is described. The prototype consists of four parts: antennas with wideband front-ends, analog back-ends, digital receivers and a correlator. The prototype antennas are mounted on the outermost stations of the Siberian Solar Radio Telescope (SSRT) array. A signal from each antenna is transmitted to a workroom by an analog fiber optical link, laid in an underground tunnel. After mixing, all signals are digitized and processed by digital receivers before the data are transmitted to the correlator. The digital receivers and the correlator are accessible by the LAN. The frequency range of the prototype is from 4 to 8 GHz. Currently the frequency switching observing mode is used. The prototype data include both circular polarizations at a number frequencies given by a list. This prototype is the first stage of the multifrequency Siberian radioheliograph development. It is assumed that the radioheliograph will consist of 96 antennas and will occupy stations of the West-East-South subarray of the SSRT. The radioheliograph will be fully constructed in autumn of 2012. We plan to reach the brightness temperature sensitivity about 100 K for the snapshot image, a spatial resolution up to 13 arcseconds at 8 GHz and polarization measurement accuracy about a few percent.

Citation

Text

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S. V. Lesovoi, A. T. Altyntsev, E. F. Ivanov, A. V. Gubin . The multifrequency radioheliograph // Transactions of IAA RAS. — 2012. — Issue 24. — P. 31–45.

@article{lesovoi2012,
  abstract = {The 10-antenna prototype of the multifrequency Siberian radioheliograph is described. The prototype consists of four parts: antennas with wideband front-ends, analog back-ends, digital receivers and a correlator. The prototype antennas are mounted on the outermost stations of the Siberian Solar Radio Telescope (SSRT) array. A signal from each antenna is transmitted to a workroom by an analog fiber optical link, laid in an underground tunnel. After mixing, all signals are digitized and processed by digital receivers before the data are transmitted to the correlator. The digital receivers and the correlator are accessible by the LAN. The frequency range of the prototype is from 4 to 8 GHz. Currently the frequency switching observing mode is used. The prototype data include both circular polarizations at a number frequencies given by a list. This prototype is the first stage of the multifrequency Siberian radioheliograph development. It is assumed that the radioheliograph will consist of 96 antennas and will occupy stations of the West-East-South subarray of the SSRT. The radioheliograph will be fully constructed in autumn of 2012. We plan to reach the brightness temperature sensitivity about 100 K for the snapshot image, a spatial resolution up to 13 arcseconds at 8 GHz and polarization measurement accuracy about a few percent.},
  author = {S.~V. Lesovoi and A.~T. Altyntsev and E.~F. Ivanov and A.~V. Gubin},
  issue = {24},
  journal = {Transactions of IAA RAS},
  keyword = {radioheliograph, antennas with a wideband feed system, digital receivers, correlator, frequency converter},
  pages = {31--45},
  title = {The multifrequency radioheliograph},
  url = {http://iaaras.ru/en/library/paper/823/},
  year = {2012}
}

TY  - JOUR
TI  - The multifrequency radioheliograph
AU  - Lesovoi, S. V.
AU  - Altyntsev, A. T.
AU  - Ivanov, E. F.
AU  - Gubin, A. V.
PY  - 2012
T2  - Transactions of IAA RAS
IS  - 24
SP  - 31
AB  - The 10-antenna prototype of the multifrequency Siberian
radioheliograph is described. The prototype consists of four parts:
antennas with wideband front-ends, analog back-ends, digital
receivers and a correlator. The prototype antennas are mounted on the
outermost stations of the Siberian Solar Radio Telescope (SSRT)
array. A signal from each antenna is transmitted to a workroom by an
analog fiber optical link, laid in an underground tunnel. After
mixing, all signals are digitized and processed by digital receivers
before the data are transmitted to the correlator. The digital
receivers and the correlator are accessible by the LAN. The frequency
range of the prototype is from 4 to 8 GHz. Currently the frequency
switching observing mode is used. The prototype data include both
circular polarizations at a number frequencies given by a list. This
prototype is the first stage of the multifrequency Siberian
radioheliograph development. It is assumed that the radioheliograph
will consist of 96 antennas and will occupy stations of the West-
East-South subarray of the SSRT. The radioheliograph will be fully
constructed in autumn of 2012. We plan to reach the brightness
temperature sensitivity about 100 K for the snapshot image, a spatial
resolution up to 13 arcseconds at 8 GHz and polarization measurement
accuracy about a few percent.
UR  - http://iaaras.ru/en/library/paper/823/
ER  -