Adaptive array processing for wideband nulling in GPS systems
Military GPS systems must operate in the presence of hostile jamming. Vast power differences between nearby jammers and distant satellite sources makes the spread-spectrum gain of the GPS signal inadequate for anti-jamming (A/J) protection. Adaptive antenna nulling systems have been proposed for add...
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| creator | Hatke, G.F. |
| description | Military GPS systems must operate in the presence of hostile jamming. Vast power differences between nearby jammers and distant satellite sources makes the spread-spectrum gain of the GPS signal inadequate for anti-jamming (A/J) protection. Adaptive antenna nulling systems have been proposed for additional A/J protection, but current systems, such as the AE-1, fail to address the near-field multipath associated with arrays mounted on a real aircraft. We examine the design of a space-time-adaptive (STAP) beamformer for GPS nulling, including the effects the STAP processor has on the GPS position calculation via the time-difference-of-arrival (TDOA) measurements from different satellites. Two novel architectures are proposed, and their performance quantified via a simulation driven by measurements taken on a 1/4 scale F-16. |
| doi_str_mv | 10.1109/ACSSC.1998.751542 |
| format | Conference Proceeding |
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Vast power differences between nearby jammers and distant satellite sources makes the spread-spectrum gain of the GPS signal inadequate for anti-jamming (A/J) protection. Adaptive antenna nulling systems have been proposed for additional A/J protection, but current systems, such as the AE-1, fail to address the near-field multipath associated with arrays mounted on a real aircraft. We examine the design of a space-time-adaptive (STAP) beamformer for GPS nulling, including the effects the STAP processor has on the GPS position calculation via the time-difference-of-arrival (TDOA) measurements from different satellites. 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Vast power differences between nearby jammers and distant satellite sources makes the spread-spectrum gain of the GPS signal inadequate for anti-jamming (A/J) protection. Adaptive antenna nulling systems have been proposed for additional A/J protection, but current systems, such as the AE-1, fail to address the near-field multipath associated with arrays mounted on a real aircraft. We examine the design of a space-time-adaptive (STAP) beamformer for GPS nulling, including the effects the STAP processor has on the GPS position calculation via the time-difference-of-arrival (TDOA) measurements from different satellites. Two novel architectures are proposed, and their performance quantified via a simulation driven by measurements taken on a 1/4 scale F-16.</description><subject>Adaptive arrays</subject><subject>Adaptive systems</subject><subject>Antenna arrays</subject><subject>Array signal processing</subject><subject>Global Positioning System</subject><subject>Jamming</subject><subject>Military satellites</subject><subject>Power system protection</subject><subject>Spread spectrum communication</subject><subject>Wideband</subject><issn>1058-6393</issn><issn>2576-2303</issn><isbn>0780351487</isbn><isbn>9780780351486</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1998</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotT81KxDAYDP6Add0H0FNeoPXLX5McPJTirsKCQve-fG1TiXS7JalK397KOpdhZmCYIeSeQcYY2MeirKoyY9aaTCumJL8gCVc6T7kAcUluQRsQikmjr0jCQJk0F1bckHWMn7BAqiVkCXkqWhwn_-0ohoAzHcOpcTH64YN2p0B_fOtqHFo6fPX9n-kHun2vaJzj5I7xjlx32Ee3_ucV2W-e9-VLunvbvpbFLvVM8yllDpWzueMotLJQL3PAYNc0Sro217jIXEnExiKAyA0qq-tWgzRGSK7Eijyca71z7jAGf8QwH86_xS9AXkkM</recordid><startdate>1998</startdate><enddate>1998</enddate><creator>Hatke, G.F.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>1998</creationdate><title>Adaptive array processing for wideband nulling in GPS systems</title><author>Hatke, G.F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i172t-1ea5e96e2a37590b05808afcc54ed67a580654aac9a00368a597bd7048834253</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Adaptive arrays</topic><topic>Adaptive systems</topic><topic>Antenna arrays</topic><topic>Array signal processing</topic><topic>Global Positioning System</topic><topic>Jamming</topic><topic>Military satellites</topic><topic>Power system protection</topic><topic>Spread spectrum communication</topic><topic>Wideband</topic><toplevel>online_resources</toplevel><creatorcontrib>Hatke, G.F.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Hatke, G.F.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Adaptive array processing for wideband nulling in GPS systems</atitle><btitle>Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284)</btitle><stitle>ACSSC</stitle><date>1998</date><risdate>1998</risdate><volume>2</volume><spage>1332</spage><epage>1336 vol.2</epage><pages>1332-1336 vol.2</pages><issn>1058-6393</issn><eissn>2576-2303</eissn><isbn>0780351487</isbn><isbn>9780780351486</isbn><abstract>Military GPS systems must operate in the presence of hostile jamming. Vast power differences between nearby jammers and distant satellite sources makes the spread-spectrum gain of the GPS signal inadequate for anti-jamming (A/J) protection. Adaptive antenna nulling systems have been proposed for additional A/J protection, but current systems, such as the AE-1, fail to address the near-field multipath associated with arrays mounted on a real aircraft. We examine the design of a space-time-adaptive (STAP) beamformer for GPS nulling, including the effects the STAP processor has on the GPS position calculation via the time-difference-of-arrival (TDOA) measurements from different satellites. Two novel architectures are proposed, and their performance quantified via a simulation driven by measurements taken on a 1/4 scale F-16.</abstract><pub>IEEE</pub><doi>10.1109/ACSSC.1998.751542</doi></addata></record> |
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| identifier | ISSN: 1058-6393 |
| ispartof | Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284), 1998, Vol.2, p.1332-1336 vol.2 |
| issn | 1058-6393 2576-2303 |
| language | eng |
| recordid | cdi_ieee_primary_751542 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Adaptive arrays Adaptive systems Antenna arrays Array signal processing Global Positioning System Jamming Military satellites Power system protection Spread spectrum communication Wideband |
| title | Adaptive array processing for wideband nulling in GPS systems |
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