Optimal antenna topologies for spatial gradient detection in differential GNSS
This paper describes new methods to determine optimal reference antenna topologies for detection of spatial gradients in differential Global Navigation Satellite Systems (GNSS). Such gradients can be caused by ionospheric fronts and orbit ephemeris faults, and if undetected, represent major threats...
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| Veröffentlicht in: | Radio science 2015-07, Vol.50 (7), p.728-743 |
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| container_title | Radio science |
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| creator | Jing, Jing Khanafseh, Samer Langel, Steven Chan, Fang-Cheng Pervan, Boris |
| description | This paper describes new methods to determine optimal reference antenna topologies for detection of spatial gradients in differential Global Navigation Satellite Systems (GNSS). Such gradients can be caused by ionospheric fronts and orbit ephemeris faults, and if undetected, represent major threats to aircraft navigation integrity. Differential carrier phase measurements between ground antennas are highly sensitive to spatial gradients. Therefore, monitors using spatially separated ground antennas have recently attracted great interest. However, they cannot detect gradients of all sizes and directions due to the presence of integer ambiguities. These ambiguities cannot be resolved because the gradient magnitude is unknown a priori. Furthermore, the performance of such monitors is highly dependent on the spatial distribution of reference antennas. In this work, we introduce new methods to find optimized antenna topologies for spatial gradient detection.
Key Points
Investigate antenna topology optimization for ionospheric gradient monitoring
Determine optimal antenna topologies for detection of spatial gradients |
| doi_str_mv | 10.1002/2014RS005646 |
| format | Article |
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Key Points
Investigate antenna topology optimization for ionospheric gradient monitoring
Determine optimal antenna topologies for detection of spatial gradients</description><identifier>ISSN: 0048-6604</identifier><identifier>EISSN: 1944-799X</identifier><identifier>DOI: 10.1002/2014RS005646</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Ambiguity ; antenna ; antenna topology ; Antennas ; carrier phase ; GBAS ; GNSS ; Grounds ; Ionosphere ; ionospheric gradient ; Ionospherics ; Monitors ; Navigation systems ; Optimization ; Topology</subject><ispartof>Radio science, 2015-07, Vol.50 (7), p.728-743</ispartof><rights>2015. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4473-1784f57f7b6c7571c477468c338749a7dbd32b1f2b8c808a9861b0b9838425ec3</citedby><cites>FETCH-LOGICAL-c4473-1784f57f7b6c7571c477468c338749a7dbd32b1f2b8c808a9861b0b9838425ec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2014RS005646$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2014RS005646$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids></links><search><creatorcontrib>Jing, Jing</creatorcontrib><creatorcontrib>Khanafseh, Samer</creatorcontrib><creatorcontrib>Langel, Steven</creatorcontrib><creatorcontrib>Chan, Fang-Cheng</creatorcontrib><creatorcontrib>Pervan, Boris</creatorcontrib><title>Optimal antenna topologies for spatial gradient detection in differential GNSS</title><title>Radio science</title><addtitle>Radio Sci</addtitle><description>This paper describes new methods to determine optimal reference antenna topologies for detection of spatial gradients in differential Global Navigation Satellite Systems (GNSS). Such gradients can be caused by ionospheric fronts and orbit ephemeris faults, and if undetected, represent major threats to aircraft navigation integrity. Differential carrier phase measurements between ground antennas are highly sensitive to spatial gradients. Therefore, monitors using spatially separated ground antennas have recently attracted great interest. However, they cannot detect gradients of all sizes and directions due to the presence of integer ambiguities. These ambiguities cannot be resolved because the gradient magnitude is unknown a priori. Furthermore, the performance of such monitors is highly dependent on the spatial distribution of reference antennas. In this work, we introduce new methods to find optimized antenna topologies for spatial gradient detection.
Key Points
Investigate antenna topology optimization for ionospheric gradient monitoring
Determine optimal antenna topologies for detection of spatial gradients</description><subject>Ambiguity</subject><subject>antenna</subject><subject>antenna topology</subject><subject>Antennas</subject><subject>carrier phase</subject><subject>GBAS</subject><subject>GNSS</subject><subject>Grounds</subject><subject>Ionosphere</subject><subject>ionospheric gradient</subject><subject>Ionospherics</subject><subject>Monitors</subject><subject>Navigation systems</subject><subject>Optimization</subject><subject>Topology</subject><issn>0048-6604</issn><issn>1944-799X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp90E9LHDEYBvBQKrhVb36AAS89dOybP5NkjsXq2iK7smPp3kImk5HoOBmTLLrf3siWIh48vZD394SXB6FjDKcYgHwngNmqAag445_QDNeMlaKu15_RDIDJknNg--hLjHeQZVYztFhOyT3oodBjsuOoi-QnP_hbZ2PR-1DESSeX17dBd86OqehssiY5PxZuLDrX9zbk51cyXzTNIdrr9RDt0b95gP5cnN-cXZZXy_mvsx9XpWFM0BILyfpK9KLlRlQCGyYE49JQKgWrtejajpIW96SVRoLUteS4hbaWVDJSWUMP0Nfdv1Pwjxsbk3pw0dhh0KP1m6iwoICxFFBlevKO3vlNGPN1WUE-h2PMs_q2Uyb4GIPt1RRyL2GrMKjXctXbcjMnO_7kBrv90KrVz4YA4TSHyl3IxWSf_4d0uFdcUFGpv4u5ws319ZpwrH7TF8k0iAU</recordid><startdate>201507</startdate><enddate>201507</enddate><creator>Jing, Jing</creator><creator>Khanafseh, Samer</creator><creator>Langel, Steven</creator><creator>Chan, Fang-Cheng</creator><creator>Pervan, Boris</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>201507</creationdate><title>Optimal antenna topologies for spatial gradient detection in differential GNSS</title><author>Jing, Jing ; Khanafseh, Samer ; Langel, Steven ; Chan, Fang-Cheng ; Pervan, Boris</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4473-1784f57f7b6c7571c477468c338749a7dbd32b1f2b8c808a9861b0b9838425ec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Ambiguity</topic><topic>antenna</topic><topic>antenna topology</topic><topic>Antennas</topic><topic>carrier phase</topic><topic>GBAS</topic><topic>GNSS</topic><topic>Grounds</topic><topic>Ionosphere</topic><topic>ionospheric gradient</topic><topic>Ionospherics</topic><topic>Monitors</topic><topic>Navigation systems</topic><topic>Optimization</topic><topic>Topology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jing, Jing</creatorcontrib><creatorcontrib>Khanafseh, Samer</creatorcontrib><creatorcontrib>Langel, Steven</creatorcontrib><creatorcontrib>Chan, Fang-Cheng</creatorcontrib><creatorcontrib>Pervan, Boris</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Radio science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jing, Jing</au><au>Khanafseh, Samer</au><au>Langel, Steven</au><au>Chan, Fang-Cheng</au><au>Pervan, Boris</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimal antenna topologies for spatial gradient detection in differential GNSS</atitle><jtitle>Radio science</jtitle><addtitle>Radio Sci</addtitle><date>2015-07</date><risdate>2015</risdate><volume>50</volume><issue>7</issue><spage>728</spage><epage>743</epage><pages>728-743</pages><issn>0048-6604</issn><eissn>1944-799X</eissn><abstract>This paper describes new methods to determine optimal reference antenna topologies for detection of spatial gradients in differential Global Navigation Satellite Systems (GNSS). Such gradients can be caused by ionospheric fronts and orbit ephemeris faults, and if undetected, represent major threats to aircraft navigation integrity. Differential carrier phase measurements between ground antennas are highly sensitive to spatial gradients. Therefore, monitors using spatially separated ground antennas have recently attracted great interest. However, they cannot detect gradients of all sizes and directions due to the presence of integer ambiguities. These ambiguities cannot be resolved because the gradient magnitude is unknown a priori. Furthermore, the performance of such monitors is highly dependent on the spatial distribution of reference antennas. In this work, we introduce new methods to find optimized antenna topologies for spatial gradient detection.
Key Points
Investigate antenna topology optimization for ionospheric gradient monitoring
Determine optimal antenna topologies for detection of spatial gradients</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2014RS005646</doi><tpages>16</tpages></addata></record> |
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| language | eng |
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| source | Access via Wiley Online Library; Wiley-Blackwell AGU Digital Library; EZB-FREE-00999 freely available EZB journals; Wiley Online Library (Open Access Collection) |
| subjects | Ambiguity antenna antenna topology Antennas carrier phase GBAS GNSS Grounds Ionosphere ionospheric gradient Ionospherics Monitors Navigation systems Optimization Topology |
| title | Optimal antenna topologies for spatial gradient detection in differential GNSS |
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