First Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic
The Program of the Antarctic Syowa Mesosphere–Stratosphere–Troposphere/Incoherent Scatter (PANSY) radar is a large atmospheric radar located at the Antarctic Syowa Station (69.01°S, 39.59°E). The PANSY radar performed the first incoherent scatter (IS) measurements in the Antarctic region in 2015. Se...
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| Veröffentlicht in: | Journal of atmospheric and oceanic technology 2019-09, Vol.36 (9), p.1881-1888 |
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| creator | Hashimoto, Taishi Saito, Akinori Nishimura, Koji Tsutsumi, Masaki Sato, Kaoru Sato, Toru |
| description | The Program of the Antarctic Syowa Mesosphere–Stratosphere–Troposphere/Incoherent Scatter (PANSY) radar is a large atmospheric radar located at the Antarctic Syowa Station (69.01°S, 39.59°E). The PANSY radar performed the first incoherent scatter (IS) measurements in the Antarctic region in 2015. Several specific observations were undertaken in 2017 including a 24-h observation of the ionosphere using a peripheral antenna array to suppress interference from the field-aligned irregularities (FAIs). This paper presents the preliminary results derived from the IS measurements using the PANSY radar and the adaptive signal processing techniques to suppress FAIs. The norm-constrained and directionally constrained minimization of power (NC-DCMP) algorithm was applied to the 24-h ionosphere observations by the PANSY radar with a weighting applied to the directional constraint based on the gain differences of the subarrays. When compared with the conventional nonadaptive approach, the number of usable power profiles was increased by about 24% by the gain-weighted NC-DCMP algorithm, suggesting its effectiveness for FAI clutter suppression in ionosphere observations. Furthermore, detection of FAIs using the dedicated antenna array was found valuable in assessing the reliability of estimations of electron density based on VHF-band IS radar data. |
| doi_str_mv | 10.1175/JTECH-D-18-0175.1 |
| format | Article |
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The PANSY radar performed the first incoherent scatter (IS) measurements in the Antarctic region in 2015. Several specific observations were undertaken in 2017 including a 24-h observation of the ionosphere using a peripheral antenna array to suppress interference from the field-aligned irregularities (FAIs). This paper presents the preliminary results derived from the IS measurements using the PANSY radar and the adaptive signal processing techniques to suppress FAIs. The norm-constrained and directionally constrained minimization of power (NC-DCMP) algorithm was applied to the 24-h ionosphere observations by the PANSY radar with a weighting applied to the directional constraint based on the gain differences of the subarrays. When compared with the conventional nonadaptive approach, the number of usable power profiles was increased by about 24% by the gain-weighted NC-DCMP algorithm, suggesting its effectiveness for FAI clutter suppression in ionosphere observations. Furthermore, detection of FAIs using the dedicated antenna array was found valuable in assessing the reliability of estimations of electron density based on VHF-band IS radar data.</description><identifier>ISSN: 0739-0572</identifier><identifier>EISSN: 1520-0426</identifier><identifier>DOI: 10.1175/JTECH-D-18-0175.1</identifier><language>eng</language><publisher>Boston: American Meteorological Society</publisher><subject>Algorithms ; Antarctic zone ; Antenna arrays ; Antennas ; Arrays ; Clutter ; Constraints ; Electron density ; Gravitational waves ; Incoherent scatter radar ; Information processing ; Investigations ; Ionosphere ; Irregularities ; Mesosphere ; Power ; Profiles ; Radar ; Radar data ; Radar systems ; Reliability analysis ; Scattering ; Signal processing ; Stratosphere ; Troposphere</subject><ispartof>Journal of atmospheric and oceanic technology, 2019-09, Vol.36 (9), p.1881-1888</ispartof><rights>Copyright American Meteorological Society Sep 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c426t-77811d74c7486cae52494b1b7bb2019ed334d3a56f98c8ae1691b7c1b5ef98423</citedby><cites>FETCH-LOGICAL-c426t-77811d74c7486cae52494b1b7bb2019ed334d3a56f98c8ae1691b7c1b5ef98423</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3679,27922,27923</link.rule.ids></links><search><creatorcontrib>Hashimoto, Taishi</creatorcontrib><creatorcontrib>Saito, Akinori</creatorcontrib><creatorcontrib>Nishimura, Koji</creatorcontrib><creatorcontrib>Tsutsumi, Masaki</creatorcontrib><creatorcontrib>Sato, Kaoru</creatorcontrib><creatorcontrib>Sato, Toru</creatorcontrib><title>First Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic</title><title>Journal of atmospheric and oceanic technology</title><description>The Program of the Antarctic Syowa Mesosphere–Stratosphere–Troposphere/Incoherent Scatter (PANSY) radar is a large atmospheric radar located at the Antarctic Syowa Station (69.01°S, 39.59°E). 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Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic</title><author>Hashimoto, Taishi ; Saito, Akinori ; Nishimura, Koji ; Tsutsumi, Masaki ; Sato, Kaoru ; Sato, Toru</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c426t-77811d74c7486cae52494b1b7bb2019ed334d3a56f98c8ae1691b7c1b5ef98423</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Algorithms</topic><topic>Antarctic zone</topic><topic>Antenna arrays</topic><topic>Antennas</topic><topic>Arrays</topic><topic>Clutter</topic><topic>Constraints</topic><topic>Electron density</topic><topic>Gravitational waves</topic><topic>Incoherent scatter radar</topic><topic>Information 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Toru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>First Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic</atitle><jtitle>Journal of atmospheric and oceanic technology</jtitle><date>2019-09-01</date><risdate>2019</risdate><volume>36</volume><issue>9</issue><spage>1881</spage><epage>1888</epage><pages>1881-1888</pages><issn>0739-0572</issn><eissn>1520-0426</eissn><abstract>The Program of the Antarctic Syowa Mesosphere–Stratosphere–Troposphere/Incoherent Scatter (PANSY) radar is a large atmospheric radar located at the Antarctic Syowa Station (69.01°S, 39.59°E). The PANSY radar performed the first incoherent scatter (IS) measurements in the Antarctic region in 2015. Several specific observations were undertaken in 2017 including a 24-h observation of the ionosphere using a peripheral antenna array to suppress interference from the field-aligned irregularities (FAIs). This paper presents the preliminary results derived from the IS measurements using the PANSY radar and the adaptive signal processing techniques to suppress FAIs. The norm-constrained and directionally constrained minimization of power (NC-DCMP) algorithm was applied to the 24-h ionosphere observations by the PANSY radar with a weighting applied to the directional constraint based on the gain differences of the subarrays. When compared with the conventional nonadaptive approach, the number of usable power profiles was increased by about 24% by the gain-weighted NC-DCMP algorithm, suggesting its effectiveness for FAI clutter suppression in ionosphere observations. Furthermore, detection of FAIs using the dedicated antenna array was found valuable in assessing the reliability of estimations of electron density based on VHF-band IS radar data.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/JTECH-D-18-0175.1</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | American Meteorological Society; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Algorithms Antarctic zone Antenna arrays Antennas Arrays Clutter Constraints Electron density Gravitational waves Incoherent scatter radar Information processing Investigations Ionosphere Irregularities Mesosphere Power Profiles Radar Radar data Radar systems Reliability analysis Scattering Signal processing Stratosphere Troposphere |
| title | First Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic |
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