Evaluation of the performance of antenna pattern correction under the influence of unknown antenna pattern changes
An assessment of the influence of antenna pattern changes in microwave radiation estimation taking into account antenna pattern correction (APC) has been conducted. In the usual case, the antenna pattern cannot be known exactly and its changes are unknown in space. Under such conditions, the APC pro...
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| creator | Teramoto, K. Arai, K. Imatani, T. |
| description | An assessment of the influence of antenna pattern changes in microwave radiation estimation taking into account antenna pattern correction (APC) has been conducted. In the usual case, the antenna pattern cannot be known exactly and its changes are unknown in space. Under such conditions, the APC process is not always stable. Therefore it is important to reduce the instability that is called 'ill-posedness in the inverse problem'. In the paper, the projection onto convex sets (POCS) method is introduced into the APC process and it is shown that the APC process becomes more stable by using POCS than the usual APC by numerical experiments. It can be concluded that the POCS method is recommended for the APC when the antenna pattern changes are unknown.< > |
| doi_str_mv | 10.1109/IGARSS.1993.322411 |
| format | Conference Proceeding |
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In the usual case, the antenna pattern cannot be known exactly and its changes are unknown in space. Under such conditions, the APC process is not always stable. Therefore it is important to reduce the instability that is called 'ill-posedness in the inverse problem'. In the paper, the projection onto convex sets (POCS) method is introduced into the APC process and it is shown that the APC process becomes more stable by using POCS than the usual APC by numerical experiments. It can be concluded that the POCS method is recommended for the APC when the antenna pattern changes are unknown.< ></description><identifier>ISBN: 0780312406</identifier><identifier>ISBN: 9780780312401</identifier><identifier>DOI: 10.1109/IGARSS.1993.322411</identifier><language>eng</language><publisher>IEEE</publisher><subject>Brightness temperature ; Directive antennas ; Earth ; Information science ; Microwave antennas ; Numerical simulation ; Scattering ; Temperature sensors ; Thermal stresses ; Vibrations</subject><ispartof>Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium, 1993, p.1805-1807 vol.4</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/322411$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2058,4050,4051,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/322411$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Teramoto, K.</creatorcontrib><creatorcontrib>Arai, K.</creatorcontrib><creatorcontrib>Imatani, T.</creatorcontrib><title>Evaluation of the performance of antenna pattern correction under the influence of unknown antenna pattern changes</title><title>Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium</title><addtitle>IGARSS</addtitle><description>An assessment of the influence of antenna pattern changes in microwave radiation estimation taking into account antenna pattern correction (APC) has been conducted. In the usual case, the antenna pattern cannot be known exactly and its changes are unknown in space. Under such conditions, the APC process is not always stable. Therefore it is important to reduce the instability that is called 'ill-posedness in the inverse problem'. In the paper, the projection onto convex sets (POCS) method is introduced into the APC process and it is shown that the APC process becomes more stable by using POCS than the usual APC by numerical experiments. It can be concluded that the POCS method is recommended for the APC when the antenna pattern changes are unknown.< ></description><subject>Brightness temperature</subject><subject>Directive antennas</subject><subject>Earth</subject><subject>Information science</subject><subject>Microwave antennas</subject><subject>Numerical simulation</subject><subject>Scattering</subject><subject>Temperature sensors</subject><subject>Thermal stresses</subject><subject>Vibrations</subject><isbn>0780312406</isbn><isbn>9780780312401</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1993</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNplkMtKw0AYhQdEUGtfoKu8QOJcM5llKbUWCgWr6_J35h8bTSdhMlF8e3vbeTYHPvjO4hAyYbRgjJqn5WL6utkUzBhRCM4lYzfkgeqKCsYlLe_IuO8_6TFS0VKqexLn39AMkOo2ZK3P0h6zDqNv4wGCxROCkDAEyDpICWPIbBsj2rMwBIfx7NTBNwNejSF8hfYn_Df3ED6wfyS3Hpoex9cekffn-dvsJV-tF8vZdJXXTPOUe6srozkIx3agTSmNRa5opZiWx2hluXNoHEWnwO-UclrxUmhZnTAIMSKTy26NiNsu1geIv9vLK-IP_gdbDw</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Teramoto, K.</creator><creator>Arai, K.</creator><creator>Imatani, T.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1993</creationdate><title>Evaluation of the performance of antenna pattern correction under the influence of unknown antenna pattern changes</title><author>Teramoto, K. ; Arai, K. ; Imatani, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i172t-fc78972a3d1ba79649ce2508517444475c2dde9d0ed5afb55d75263748dde9a33</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Brightness temperature</topic><topic>Directive antennas</topic><topic>Earth</topic><topic>Information science</topic><topic>Microwave antennas</topic><topic>Numerical simulation</topic><topic>Scattering</topic><topic>Temperature sensors</topic><topic>Thermal stresses</topic><topic>Vibrations</topic><toplevel>online_resources</toplevel><creatorcontrib>Teramoto, K.</creatorcontrib><creatorcontrib>Arai, K.</creatorcontrib><creatorcontrib>Imatani, T.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Teramoto, K.</au><au>Arai, K.</au><au>Imatani, T.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Evaluation of the performance of antenna pattern correction under the influence of unknown antenna pattern changes</atitle><btitle>Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium</btitle><stitle>IGARSS</stitle><date>1993</date><risdate>1993</risdate><spage>1805</spage><epage>1807 vol.4</epage><pages>1805-1807 vol.4</pages><isbn>0780312406</isbn><isbn>9780780312401</isbn><abstract>An assessment of the influence of antenna pattern changes in microwave radiation estimation taking into account antenna pattern correction (APC) has been conducted. In the usual case, the antenna pattern cannot be known exactly and its changes are unknown in space. Under such conditions, the APC process is not always stable. Therefore it is important to reduce the instability that is called 'ill-posedness in the inverse problem'. In the paper, the projection onto convex sets (POCS) method is introduced into the APC process and it is shown that the APC process becomes more stable by using POCS than the usual APC by numerical experiments. It can be concluded that the POCS method is recommended for the APC when the antenna pattern changes are unknown.< ></abstract><pub>IEEE</pub><doi>10.1109/IGARSS.1993.322411</doi></addata></record> |
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| identifier | ISBN: 0780312406 |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Brightness temperature Directive antennas Earth Information science Microwave antennas Numerical simulation Scattering Temperature sensors Thermal stresses Vibrations |
| title | Evaluation of the performance of antenna pattern correction under the influence of unknown antenna pattern changes |
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