IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity
Wu, He-Zhen1; Zhu, Wei2,3; He, Tai-Ming1,4; Liu, Zheng-Yi1,4; Lan, Xiao-Wen5
2020
Source PublicationPURE AND APPLIED GEOPHYSICS
ISSN0033-4553
Volume177Issue:1Pages:487-496
AbstractThe 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.
KeywordRock ultrasound testing barker code golay-coded excitation pulse compression
DOI10.1007/s00024-019-02166-8
WOS KeywordPULSE ; SYSTEM
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000519917900033
PublisherSPRINGER BASEL AG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95479
Collection页岩气与地质工程院重点实验室
Corresponding AuthorWu, He-Zhen
Affiliation1.Chinese Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Chinese Earthquake Adm, Inst Geophys, Key Lab Seism Observat & Geophys Imaging, Beijing 100081, Peoples R China
5.Chinese Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Wu, He-Zhen,Zhu, Wei,He, Tai-Ming,et al. Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity[J]. PURE AND APPLIED GEOPHYSICS,2020,177(1):487-496.
APA Wu, He-Zhen,Zhu, Wei,He, Tai-Ming,Liu, Zheng-Yi,&Lan, Xiao-Wen.(2020).Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity.PURE AND APPLIED GEOPHYSICS,177(1),487-496.
MLA Wu, He-Zhen,et al."Application of Coded Excitation Signals for Measurement of Rock Ultrasonic Wave Velocity".PURE AND APPLIED GEOPHYSICS 177.1(2020):487-496.
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