Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity
The accurate measurement of ultrasonic velocity requires the detected waveforms to have a high signal-to-noise ratio (SNR). Coded excitation technique (CET) can improve the SNR without resolution loss. This study introduces the basic principles of phase-coded technology and gives a synthetic and exp...
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| Veröffentlicht in: | Pure and applied geophysics 2020, Vol.177 (1), p.487-496 |
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| container_title | Pure and applied geophysics |
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| creator | Wu, He-Zhen Zhu, Wei He, Tai-Ming Liu, Zheng-Yi Lan, Xiao-Wen |
| description | The accurate measurement of ultrasonic velocity requires the detected waveforms to have a high signal-to-noise ratio (SNR). Coded excitation technique (CET) can improve the SNR without resolution loss. This study introduces the basic principles of phase-coded technology and gives a synthetic and experimental evaluation of Barker and Golay codes. All the results show that CET can increase the SNR, but the gain in SNR (GSNR) is lower than the theoretical value. The velocity measurements on red sandstone and granite verify that the Barker code has better pulse compression performance than the Golay code. Besides, the application of Barker-coded signals on the velocity monitoring of uniaxially compressed rock proves that the Barker CET is reliable. |
| doi_str_mv | 10.1007/s00024-019-02166-8 |
| format | Article |
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Coded excitation technique (CET) can improve the SNR without resolution loss. This study introduces the basic principles of phase-coded technology and gives a synthetic and experimental evaluation of Barker and Golay codes. All the results show that CET can increase the SNR, but the gain in SNR (GSNR) is lower than the theoretical value. The velocity measurements on red sandstone and granite verify that the Barker code has better pulse compression performance than the Golay code. Besides, the application of Barker-coded signals on the velocity monitoring of uniaxially compressed rock proves that the Barker CET is reliable.</description><identifier>ISSN: 0033-4553</identifier><identifier>EISSN: 1420-9136</identifier><identifier>DOI: 10.1007/s00024-019-02166-8</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Compression ; Earth and Environmental Science ; Earth Sciences ; Evaluation ; Excitation ; Geophysics/Geodesy ; Golay codes ; Measurement ; Pulse compression ; Rocks ; Sandstone ; Sedimentary rocks ; Seismic velocities ; Signal-to-noise ratio ; Velocity ; Wave velocity ; Waveforms</subject><ispartof>Pure and applied geophysics, 2020, Vol.177 (1), p.487-496</ispartof><rights>Springer Nature Switzerland AG 2019</rights><rights>Pure and Applied Geophysics is a copyright of Springer, (2019). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a342t-7fc593bad8e4ec1b47106e39024da071a09e169047a815b41b83394846d9d7ee3</citedby><cites>FETCH-LOGICAL-a342t-7fc593bad8e4ec1b47106e39024da071a09e169047a815b41b83394846d9d7ee3</cites><orcidid>0000-0001-9110-8284</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00024-019-02166-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00024-019-02166-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Wu, He-Zhen</creatorcontrib><creatorcontrib>Zhu, Wei</creatorcontrib><creatorcontrib>He, Tai-Ming</creatorcontrib><creatorcontrib>Liu, Zheng-Yi</creatorcontrib><creatorcontrib>Lan, Xiao-Wen</creatorcontrib><title>Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity</title><title>Pure and applied geophysics</title><addtitle>Pure Appl. Geophys</addtitle><description>The accurate measurement of ultrasonic velocity requires the detected waveforms to have a high signal-to-noise ratio (SNR). Coded excitation technique (CET) can improve the SNR without resolution loss. This study introduces the basic principles of phase-coded technology and gives a synthetic and experimental evaluation of Barker and Golay codes. All the results show that CET can increase the SNR, but the gain in SNR (GSNR) is lower than the theoretical value. The velocity measurements on red sandstone and granite verify that the Barker code has better pulse compression performance than the Golay code. Besides, the application of Barker-coded signals on the velocity monitoring of uniaxially compressed rock proves that the Barker CET is reliable.</description><subject>Compression</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Evaluation</subject><subject>Excitation</subject><subject>Geophysics/Geodesy</subject><subject>Golay codes</subject><subject>Measurement</subject><subject>Pulse compression</subject><subject>Rocks</subject><subject>Sandstone</subject><subject>Sedimentary rocks</subject><subject>Seismic velocities</subject><subject>Signal-to-noise ratio</subject><subject>Velocity</subject><subject>Wave velocity</subject><subject>Waveforms</subject><issn>0033-4553</issn><issn>1420-9136</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kE1Lw0AQhhdRsFb_gKcFz6sz2c3HHkupH1AR1Kq3ZZNMSmqarbup2H9vagRvngaG93mZeRg7R7hEgPQqAECkBKAWEGGSiOyAjVBFIDTK5JCNAKQUKo7lMTsJYQWAaRrrEXubbDZNXdiudi13FZ-6kko--yrqbtg91cvWNoFXzvN7smHraU1tt88-uuKdL5rO2-DauuCv9pP4CzWuh3en7KjqOTr7nWO2uJ49T2_F_OHmbjqZCytV1Im0KmItc1tmpKjAXKUICUndf1NaSNGCJkw0qNRmGOcK80xKrTKVlLpMieSYXQy9G-8-thQ6s3Jbvz_ZRKgziXEcYZ-KhlThXQieKrPx9dr6nUEwe4NmMGh6g-bHoMl6SA5Q6MPtkvxf9T_UN47ncvQ</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Wu, He-Zhen</creator><creator>Zhu, Wei</creator><creator>He, Tai-Ming</creator><creator>Liu, Zheng-Yi</creator><creator>Lan, Xiao-Wen</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><orcidid>https://orcid.org/0000-0001-9110-8284</orcidid></search><sort><creationdate>2020</creationdate><title>Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity</title><author>Wu, He-Zhen ; 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Geophys</stitle><date>2020</date><risdate>2020</risdate><volume>177</volume><issue>1</issue><spage>487</spage><epage>496</epage><pages>487-496</pages><issn>0033-4553</issn><eissn>1420-9136</eissn><abstract>The accurate measurement of ultrasonic velocity requires the detected waveforms to have a high signal-to-noise ratio (SNR). Coded excitation technique (CET) can improve the SNR without resolution loss. This study introduces the basic principles of phase-coded technology and gives a synthetic and experimental evaluation of Barker and Golay codes. All the results show that CET can increase the SNR, but the gain in SNR (GSNR) is lower than the theoretical value. The velocity measurements on red sandstone and granite verify that the Barker code has better pulse compression performance than the Golay code. Besides, the application of Barker-coded signals on the velocity monitoring of uniaxially compressed rock proves that the Barker CET is reliable.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s00024-019-02166-8</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-9110-8284</orcidid></addata></record> |
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| subjects | Compression Earth and Environmental Science Earth Sciences Evaluation Excitation Geophysics/Geodesy Golay codes Measurement Pulse compression Rocks Sandstone Sedimentary rocks Seismic velocities Signal-to-noise ratio Velocity Wave velocity Waveforms |
| title | Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity |
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