Observation-point-dependent blocking shadows on a reflector antenna
The authors present efficient algorithms that can be incorporated in a physical-optics integration to account for migrating feed- and observation-point-dependent geometrical shadows caused by obstacles in the aperture of a reflector antenna with the feed under focused or scanned conditions. The expr...
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| Veröffentlicht in: | IEEE transactions on antennas and propagation 1989-06, Vol.37 (6), p.690-697 |
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| container_end_page | 697 |
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| container_issue | 6 |
| container_start_page | 690 |
| container_title | IEEE transactions on antennas and propagation |
| container_volume | 37 |
| creator | Rusch, W.V.T. Welch, L.R. Mires, G.E. |
| description | The authors present efficient algorithms that can be incorporated in a physical-optics integration to account for migrating feed- and observation-point-dependent geometrical shadows caused by obstacles in the aperture of a reflector antenna with the feed under focused or scanned conditions. The expressions involve only addition and multiplication of simple low-order polynomials and hence do not introduce expensive overhead into the numerical integration. Obstacle shapes considered are disks, polygons, cylinders, and polyhedrons. Some appropriate diffraction corrections are presented which are compatible with the blocking algorithms.< > |
| doi_str_mv | 10.1109/8.29355 |
| format | Article |
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The expressions involve only addition and multiplication of simple low-order polynomials and hence do not introduce expensive overhead into the numerical integration. Obstacle shapes considered are disks, polygons, cylinders, and polyhedrons. 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The expressions involve only addition and multiplication of simple low-order polynomials and hence do not introduce expensive overhead into the numerical integration. Obstacle shapes considered are disks, polygons, cylinders, and polyhedrons. Some appropriate diffraction corrections are presented which are compatible with the blocking algorithms.< ></description><subject>Antenna feeds</subject><subject>Antennas</subject><subject>Aperture antennas</subject><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>H infinity control</subject><subject>Optical surface waves</subject><subject>Polynomials</subject><subject>Radio frequency</subject><subject>Radiocommunications</subject><subject>Reflector antennas</subject><subject>Shape</subject><subject>Space technology</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><issn>0018-926X</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LxDAQhoMouK7i2VsPoqeu-Wiy6VEWv0DYi4K3ME2nGu0mNekq_nvrdtmrp2F4H55hXkJOGZ0xRssrPeOlkHKPTJiUOuecs30yoZTpvOTq5ZAcpfQ-rIUuiglZLKuE8Qt6F3zeBef7vMYOfY2-z6o22A_nX7P0BnX4TlnwGWQRmxZtH2IGvkfv4ZgcNNAmPNnOKXm-vXla3OePy7uHxfVjboXgfV40lFlWl0parm2tNFNaqaoGUaKCqrDIaakamEOjJC3mFqzQokKwVd0MgZiSi9HbxfC5xtSblUsW2xY8hnUyXHPGFaP_g5IJIbkawMsRtDGkNDxmuuhWEH8Mo-avTaPNps2BPN8qIVlomwjeurTD1VyVxeby2Yg5RNylo-IX6nh8VA</recordid><startdate>19890601</startdate><enddate>19890601</enddate><creator>Rusch, W.V.T.</creator><creator>Welch, L.R.</creator><creator>Mires, G.E.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7SP</scope></search><sort><creationdate>19890601</creationdate><title>Observation-point-dependent blocking shadows on a reflector antenna</title><author>Rusch, W.V.T. ; Welch, L.R. ; Mires, G.E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c332t-4f01c1d965c28cd6816866bda39e6ab4ce2096fa7af65047cac383beacbdf96f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>Antenna feeds</topic><topic>Antennas</topic><topic>Aperture antennas</topic><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>H infinity control</topic><topic>Optical surface waves</topic><topic>Polynomials</topic><topic>Radio frequency</topic><topic>Radiocommunications</topic><topic>Reflector antennas</topic><topic>Shape</topic><topic>Space technology</topic><topic>Telecommunications</topic><topic>Telecommunications and information theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rusch, W.V.T.</creatorcontrib><creatorcontrib>Welch, L.R.</creatorcontrib><creatorcontrib>Mires, G.E.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Electronics & Communications Abstracts</collection><jtitle>IEEE transactions on antennas and propagation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Rusch, W.V.T.</au><au>Welch, L.R.</au><au>Mires, G.E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation-point-dependent blocking shadows on a reflector antenna</atitle><jtitle>IEEE transactions on antennas and propagation</jtitle><stitle>TAP</stitle><date>1989-06-01</date><risdate>1989</risdate><volume>37</volume><issue>6</issue><spage>690</spage><epage>697</epage><pages>690-697</pages><issn>0018-926X</issn><eissn>1558-2221</eissn><coden>IETPAK</coden><abstract>The authors present efficient algorithms that can be incorporated in a physical-optics integration to account for migrating feed- and observation-point-dependent geometrical shadows caused by obstacles in the aperture of a reflector antenna with the feed under focused or scanned conditions. 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| ispartof | IEEE transactions on antennas and propagation, 1989-06, Vol.37 (6), p.690-697 |
| issn | 0018-926X 1558-2221 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Antenna feeds Antennas Aperture antennas Applied sciences Exact sciences and technology H infinity control Optical surface waves Polynomials Radio frequency Radiocommunications Reflector antennas Shape Space technology Telecommunications Telecommunications and information theory |
| title | Observation-point-dependent blocking shadows on a reflector antenna |
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