Correlation plots of the Siberian Radioheliograph
The Siberian Solar Radio Telescope [Grechnev et al., 2011] is now being upgraded. The upgrading is aimed at providing the aperture synthesis imaging in the 4–8 GHz frequency range [Lesovoi et al., 2011, 2014] instead of the single-frequency direct imaging due to the Earth rotation. The first phase o...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
INFRA-M
2017-03-01
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| Series: | Solar-Terrestrial Physics |
| Subjects: | |
| Online Access: | https://naukaru.ru/en/nauka/article/16397/view |
| _version_ | 1828453779575406592 |
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| author | Lesovoi S.V. Kobets V.S. |
| author_facet | Lesovoi S.V. Kobets V.S. |
| author_sort | Lesovoi S.V. |
| collection | DOAJ |
| description | The Siberian Solar Radio Telescope [Grechnev et al., 2011] is now being upgraded. The upgrading is aimed at providing the aperture synthesis imaging in the 4–8 GHz frequency range [Lesovoi et al., 2011, 2014] instead of the single-frequency direct imaging due to the Earth rotation. The first phase of the upgrading is a 48-antenna array — the Siberian Radioheliograph. One type of radioheliograph data represents correlation plots [bada-ry.iszf.irk.ru/srhCorrPlot.php]. In evaluating the covariance of two-level signals, these plots are sums of complex correlations, obtained for different antenna pairs. Bearing in mind that correlation of signals from an antenna pair is related to a spatial frequency, we can say that each value of the plot is an integral over a spatial spectrum. Limits of the integration are defined by the task. Only high spatial frequencies are integrated to obtain dynamics of com-pact sources. The whole spectrum is integrated to reach maximum sensitivity. We show that the covariance of two-level variables up to Van Vleck correction is a correlation coefficient of these variables. |
| first_indexed | 2024-12-11T00:12:49Z |
| format | Article |
| id | doaj.art-a2a89934521b413e81bde99d0a6188eb |
| institution | Directory Open Access Journal |
| issn | 2500-0535 |
| language | English |
| last_indexed | 2024-12-11T00:12:49Z |
| publishDate | 2017-03-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj.art-a2a89934521b413e81bde99d0a6188eb2022-12-22T01:28:06ZengINFRA-MSolar-Terrestrial Physics2500-05352017-03-0131192510.12737/article_58f96eeb8fa318.06122835Correlation plots of the Siberian RadioheliographLesovoi S.V.0Kobets V.S.1Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, RussiaInstitute of Solar-Terrestrial Physics SB RAS, Irkutsk, RussiaThe Siberian Solar Radio Telescope [Grechnev et al., 2011] is now being upgraded. The upgrading is aimed at providing the aperture synthesis imaging in the 4–8 GHz frequency range [Lesovoi et al., 2011, 2014] instead of the single-frequency direct imaging due to the Earth rotation. The first phase of the upgrading is a 48-antenna array — the Siberian Radioheliograph. One type of radioheliograph data represents correlation plots [bada-ry.iszf.irk.ru/srhCorrPlot.php]. In evaluating the covariance of two-level signals, these plots are sums of complex correlations, obtained for different antenna pairs. Bearing in mind that correlation of signals from an antenna pair is related to a spatial frequency, we can say that each value of the plot is an integral over a spatial spectrum. Limits of the integration are defined by the task. Only high spatial frequencies are integrated to obtain dynamics of com-pact sources. The whole spectrum is integrated to reach maximum sensitivity. We show that the covariance of two-level variables up to Van Vleck correction is a correlation coefficient of these variables.https://naukaru.ru/en/nauka/article/16397/viewRadio telescopeCorrelationSpatial spectrum |
| spellingShingle | Lesovoi S.V. Kobets V.S. Correlation plots of the Siberian Radioheliograph Solar-Terrestrial Physics Radio telescope Correlation Spatial spectrum |
| title | Correlation plots of the Siberian Radioheliograph |
| title_full | Correlation plots of the Siberian Radioheliograph |
| title_fullStr | Correlation plots of the Siberian Radioheliograph |
| title_full_unstemmed | Correlation plots of the Siberian Radioheliograph |
| title_short | Correlation plots of the Siberian Radioheliograph |
| title_sort | correlation plots of the siberian radioheliograph |
| topic | Radio telescope Correlation Spatial spectrum |
| url | https://naukaru.ru/en/nauka/article/16397/view |
| work_keys_str_mv | AT lesovoisv correlationplotsofthesiberianradioheliograph AT kobetsvs correlationplotsofthesiberianradioheliograph |