True time-delay bandpass beamforming
A simple digital scheme for bandpass time-domain beamforming that is applicable when there is significant change in the envelope of the signal across the extent of an array of hydrophones is presented. The three requisite processes to obtain complex-baseband beam signals, namely, down conversion to...
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| Veröffentlicht in: | IEEE journal of oceanic engineering 1992-04, Vol.17 (2), p.185-192 |
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| container_title | IEEE journal of oceanic engineering |
| container_volume | 17 |
| creator | Horvat, D.C.M. Bird, J.S. Goulding, M.M. |
| description | A simple digital scheme for bandpass time-domain beamforming that is applicable when there is significant change in the envelope of the signal across the extent of an array of hydrophones is presented. The three requisite processes to obtain complex-baseband beam signals, namely, down conversion to complex baseband, time delay of the complex envelope, and phase rotation, are discussed. Down conversion is accomplished by subsampling the bandpass signal and an efficient interpolation technique is employed for time registration of these samples. Since the same interpolation technique is u sed to implement the time delay, the two processes are combined. With further modification to effect the phase rotation, it is shown how the three requisite processes for bandpass beamforming can be accomplished with a single analog-to-digital converter and two short finite impulse response filters.< > |
| doi_str_mv | 10.1109/48.126975 |
| format | Article |
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With further modification to effect the phase rotation, it is shown how the three requisite processes for bandpass beamforming can be accomplished with a single analog-to-digital converter and two short finite impulse response filters.< ></description><identifier>ISSN: 0364-9059</identifier><identifier>EISSN: 1558-1691</identifier><identifier>DOI: 10.1109/48.126975</identifier><identifier>CODEN: IJOEDY</identifier><language>eng</language><publisher>IEEE</publisher><subject>Acoustic beams ; Array signal processing ; Baseband ; Birds ; Delay effects ; Marine ; Phased arrays ; Signal processing ; Signal processing algorithms ; Sonar equipment ; Time domain analysis</subject><ispartof>IEEE journal of oceanic engineering, 1992-04, Vol.17 (2), p.185-192</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-bc3a9476549433c73a9f97954d1688badcfc4ba24e3916e33779940dac1f6be23</citedby><cites>FETCH-LOGICAL-c339t-bc3a9476549433c73a9f97954d1688badcfc4ba24e3916e33779940dac1f6be23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/126975$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27923,27924,54757</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/126975$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Horvat, D.C.M.</creatorcontrib><creatorcontrib>Bird, J.S.</creatorcontrib><creatorcontrib>Goulding, M.M.</creatorcontrib><title>True time-delay bandpass beamforming</title><title>IEEE journal of oceanic engineering</title><addtitle>JOE</addtitle><description>A simple digital scheme for bandpass time-domain beamforming that is applicable when there is significant change in the envelope of the signal across the extent of an array of hydrophones is presented. The three requisite processes to obtain complex-baseband beam signals, namely, down conversion to complex baseband, time delay of the complex envelope, and phase rotation, are discussed. Down conversion is accomplished by subsampling the bandpass signal and an efficient interpolation technique is employed for time registration of these samples. Since the same interpolation technique is u sed to implement the time delay, the two processes are combined. With further modification to effect the phase rotation, it is shown how the three requisite processes for bandpass beamforming can be accomplished with a single analog-to-digital converter and two short finite impulse response filters.< ></description><subject>Acoustic beams</subject><subject>Array signal processing</subject><subject>Baseband</subject><subject>Birds</subject><subject>Delay effects</subject><subject>Marine</subject><subject>Phased arrays</subject><subject>Signal processing</subject><subject>Signal processing algorithms</subject><subject>Sonar equipment</subject><subject>Time domain analysis</subject><issn>0364-9059</issn><issn>1558-1691</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNqF0LtLxEAQBvBFFIynha3VFSJY5NzJPqeUwxcc2Jz1stlMJJLHuXsp7r83EsHyqmGYHx_Mx9g18BUAxwdpV1BoNOqEZaCUzUEjnLKMCy1z5ArP2UVKX5yDlAYzdruNIy33TUd5Ra0_LEvfVzuf0rIk39VD7Jr-85Kd1b5NdPU3F-zj-Wm7fs037y9v68dNHoTAfV4G4VEarSRKIYKZthoNKlmBtrb0VaiDLH0hSSBoEsIYRMkrH6DWJRViwe7m3F0cvkdKe9c1KVDb-p6GMbkC1fSc1seh1UZYexyCFoCTneD9DEMcUopUu11sOh8PDrj7bdZJ6-ZmJ3sz24aI_t18_AF42XEp</recordid><startdate>19920401</startdate><enddate>19920401</enddate><creator>Horvat, D.C.M.</creator><creator>Bird, J.S.</creator><creator>Goulding, M.M.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>19920401</creationdate><title>True time-delay bandpass beamforming</title><author>Horvat, D.C.M. ; Bird, J.S. ; Goulding, M.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-bc3a9476549433c73a9f97954d1688badcfc4ba24e3916e33779940dac1f6be23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Acoustic beams</topic><topic>Array signal processing</topic><topic>Baseband</topic><topic>Birds</topic><topic>Delay effects</topic><topic>Marine</topic><topic>Phased arrays</topic><topic>Signal processing</topic><topic>Signal processing algorithms</topic><topic>Sonar equipment</topic><topic>Time domain analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Horvat, D.C.M.</creatorcontrib><creatorcontrib>Bird, J.S.</creatorcontrib><creatorcontrib>Goulding, M.M.</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE journal of oceanic engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Horvat, D.C.M.</au><au>Bird, J.S.</au><au>Goulding, M.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>True time-delay bandpass beamforming</atitle><jtitle>IEEE journal of oceanic engineering</jtitle><stitle>JOE</stitle><date>1992-04-01</date><risdate>1992</risdate><volume>17</volume><issue>2</issue><spage>185</spage><epage>192</epage><pages>185-192</pages><issn>0364-9059</issn><eissn>1558-1691</eissn><coden>IJOEDY</coden><abstract>A simple digital scheme for bandpass time-domain beamforming that is applicable when there is significant change in the envelope of the signal across the extent of an array of hydrophones is presented. The three requisite processes to obtain complex-baseband beam signals, namely, down conversion to complex baseband, time delay of the complex envelope, and phase rotation, are discussed. Down conversion is accomplished by subsampling the bandpass signal and an efficient interpolation technique is employed for time registration of these samples. Since the same interpolation technique is u sed to implement the time delay, the two processes are combined. With further modification to effect the phase rotation, it is shown how the three requisite processes for bandpass beamforming can be accomplished with a single analog-to-digital converter and two short finite impulse response filters.< ></abstract><pub>IEEE</pub><doi>10.1109/48.126975</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 0364-9059 |
| ispartof | IEEE journal of oceanic engineering, 1992-04, Vol.17 (2), p.185-192 |
| issn | 0364-9059 1558-1691 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_28673886 |
| source | IEEE Electronic Library (IEL) |
| subjects | Acoustic beams Array signal processing Baseband Birds Delay effects Marine Phased arrays Signal processing Signal processing algorithms Sonar equipment Time domain analysis |
| title | True time-delay bandpass beamforming |
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