Finding of low-contrast formations in the solar corona using a low contrast method
Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculi...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Kuznetsova, S. M. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2009 |
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| Schlagwörter: |
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| Anmerkung: |
© Pleiades Publishing, Ltd. 2009 |
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| Übergeordnetes Werk: |
Enthalten in: Geomagnetism and aeronomy - SP MAIK Nauka/Interperiodica, 1961, 49(2009), 7 vom: Dez., Seite 850-855 |
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| Übergeordnetes Werk: |
volume:49 ; year:2009 ; number:7 ; month:12 ; pages:850-855 |
| Links: |
|---|
| DOI / URN: |
10.1134/S0016793209070044 |
|---|
| Katalog-ID: |
OLC2071818385 |
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| 520 | |a Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. | ||
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| 700 | 1 | |a Smolkov, G. Ya. |4 aut | |
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10.1134/S0016793209070044 doi (DE-627)OLC2071818385 (DE-He213)S0016793209070044-p DE-627 ger DE-627 rakwb eng 550 VZ 16,13 ssgn Kuznetsova, S. M. verfasserin aut Finding of low-contrast formations in the solar corona using a low contrast method 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2009 Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. Coronal Hole Solar Corona Solar Disk Polar Coronal Hole Radio Image Krissinel, B. B. aut Obukhov, A. G. aut Prosovetsky, D. V. aut Smolkov, G. Ya. aut Enthalten in Geomagnetism and aeronomy SP MAIK Nauka/Interperiodica, 1961 49(2009), 7 vom: Dez., Seite 850-855 (DE-627)129365564 (DE-600)161523-3 (DE-576)014739321 0016-7932 nnns volume:49 year:2009 number:7 month:12 pages:850-855 https://doi.org/10.1134/S0016793209070044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 AR 49 2009 7 12 850-855 |
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10.1134/S0016793209070044 doi (DE-627)OLC2071818385 (DE-He213)S0016793209070044-p DE-627 ger DE-627 rakwb eng 550 VZ 16,13 ssgn Kuznetsova, S. M. verfasserin aut Finding of low-contrast formations in the solar corona using a low contrast method 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2009 Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. Coronal Hole Solar Corona Solar Disk Polar Coronal Hole Radio Image Krissinel, B. B. aut Obukhov, A. G. aut Prosovetsky, D. V. aut Smolkov, G. Ya. aut Enthalten in Geomagnetism and aeronomy SP MAIK Nauka/Interperiodica, 1961 49(2009), 7 vom: Dez., Seite 850-855 (DE-627)129365564 (DE-600)161523-3 (DE-576)014739321 0016-7932 nnns volume:49 year:2009 number:7 month:12 pages:850-855 https://doi.org/10.1134/S0016793209070044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 AR 49 2009 7 12 850-855 |
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10.1134/S0016793209070044 doi (DE-627)OLC2071818385 (DE-He213)S0016793209070044-p DE-627 ger DE-627 rakwb eng 550 VZ 16,13 ssgn Kuznetsova, S. M. verfasserin aut Finding of low-contrast formations in the solar corona using a low contrast method 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2009 Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. Coronal Hole Solar Corona Solar Disk Polar Coronal Hole Radio Image Krissinel, B. B. aut Obukhov, A. G. aut Prosovetsky, D. V. aut Smolkov, G. Ya. aut Enthalten in Geomagnetism and aeronomy SP MAIK Nauka/Interperiodica, 1961 49(2009), 7 vom: Dez., Seite 850-855 (DE-627)129365564 (DE-600)161523-3 (DE-576)014739321 0016-7932 nnns volume:49 year:2009 number:7 month:12 pages:850-855 https://doi.org/10.1134/S0016793209070044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 AR 49 2009 7 12 850-855 |
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10.1134/S0016793209070044 doi (DE-627)OLC2071818385 (DE-He213)S0016793209070044-p DE-627 ger DE-627 rakwb eng 550 VZ 16,13 ssgn Kuznetsova, S. M. verfasserin aut Finding of low-contrast formations in the solar corona using a low contrast method 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2009 Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. Coronal Hole Solar Corona Solar Disk Polar Coronal Hole Radio Image Krissinel, B. B. aut Obukhov, A. G. aut Prosovetsky, D. V. aut Smolkov, G. Ya. aut Enthalten in Geomagnetism and aeronomy SP MAIK Nauka/Interperiodica, 1961 49(2009), 7 vom: Dez., Seite 850-855 (DE-627)129365564 (DE-600)161523-3 (DE-576)014739321 0016-7932 nnns volume:49 year:2009 number:7 month:12 pages:850-855 https://doi.org/10.1134/S0016793209070044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 AR 49 2009 7 12 850-855 |
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10.1134/S0016793209070044 doi (DE-627)OLC2071818385 (DE-He213)S0016793209070044-p DE-627 ger DE-627 rakwb eng 550 VZ 16,13 ssgn Kuznetsova, S. M. verfasserin aut Finding of low-contrast formations in the solar corona using a low contrast method 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2009 Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. Coronal Hole Solar Corona Solar Disk Polar Coronal Hole Radio Image Krissinel, B. B. aut Obukhov, A. G. aut Prosovetsky, D. V. aut Smolkov, G. Ya. aut Enthalten in Geomagnetism and aeronomy SP MAIK Nauka/Interperiodica, 1961 49(2009), 7 vom: Dez., Seite 850-855 (DE-627)129365564 (DE-600)161523-3 (DE-576)014739321 0016-7932 nnns volume:49 year:2009 number:7 month:12 pages:850-855 https://doi.org/10.1134/S0016793209070044 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 AR 49 2009 7 12 850-855 |
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Kuznetsova, S. M. Krissinel, B. B. Obukhov, A. G. Prosovetsky, D. V. Smolkov, G. Ya. |
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finding of low-contrast formations in the solar corona using a low contrast method |
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Finding of low-contrast formations in the solar corona using a low contrast method |
| abstract |
Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. © Pleiades Publishing, Ltd. 2009 |
| abstractGer |
Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. © Pleiades Publishing, Ltd. 2009 |
| abstract_unstemmed |
Abstract Coronal holes, bright coronal points, filaments, and prominences are among the initial factors responsible for variability of the space weather conditions. Radioheliographic data on low-contrast formations contain valuable information necessary for studying conditions of origination, peculiarities of evolution, and prediction of solar-terrestrial relations. It is important to identify these formations on the solar disk when physical properties of coronal holes are revealed. The algorithm based on the Wiener-Tikhonov filter modification with controlled parameters and a high-frequency contrast filter was developed in order to isolate low-contrast formations in the solar corona brightness distributions obtained at a wavelength of 5.2 cm from the Siberian solar radio telescope observations. In this case low-contrast sources are isolated in two main stages: (1) HF noise smoothing based on an evolutionary filter with controlled parameters and (2) contrasting of sources using an HF filter. The evolutionary filter regularization parameters and the dimensions of an HF contrast filter mask are selected depending on the signal-to-noise ratio and dimensions of the studied region based on the results of preliminary data processing. The corresponding software has been developed in order to identify low-contrast objects on the Sun’s radio images using this method. The algorithm is used to isolate filaments and coronal holes and the results of this usage are presented in this work. © Pleiades Publishing, Ltd. 2009 |
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Finding of low-contrast formations in the solar corona using a low contrast method |
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