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中文核心期刊

Volume 45 Issue 6
Jun.  2022
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MAO Qiuqin, CHEN Yao, ZHANG Boyuan, SHI Wenze, LU Chao, LI Qiufeng. Enhancing effect of phase circular statistics vector for improvement imaging quality of ultrasonic total focusing method[J]. ACTA ACUSTICA, 2020, 45(6): 913-921. DOI: 10.15949/j.cnki.0371-0025.2020.06.015
Citation: MAO Qiuqin, CHEN Yao, ZHANG Boyuan, SHI Wenze, LU Chao, LI Qiufeng. Enhancing effect of phase circular statistics vector for improvement imaging quality of ultrasonic total focusing method[J]. ACTA ACUSTICA, 2020, 45(6): 913-921. DOI: 10.15949/j.cnki.0371-0025.2020.06.015
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Enhancing effect of phase circular statistics vector for improvement imaging quality of ultrasonic total focusing method

  • 1 Key Laboratory of Non-destructive Testing Technology, Nanchang Hangkong University Nanchang 330063;

  • 2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Acadeny of Sciences Beijing 100190;

  • 3 Ganran Normal University Ganzhou 341000

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  • PACS: 
  • Received Date: February 28, 2019
  • Revised Date: October 06, 2019
  • Available Online: June 26, 2022
    Graphical Abstract
    • Abstract
  • For further improving the quality of Total Focusing Method (TFM) imaging,an ultrasonic TFM based on Phase Circular Statistics Vector (PCSV) has been presented.Firstly,the information of the signal phases of the Full Matrix Capture (FMC) aperture data is extracted in the TFM implement processes.The phases of the same focusing pixel were regarded as the samples of the circular statistics.Then the PCSVs determined by the signal amplitudes and phases were acquired by using the operation of saturation weighted statistics.Finally,the magnitudes of the PCSV were equivalent to the amplitudes of the TFM image.The results showed that the TFM-PCSV was capable of improving SNR by amplifying the contribution of phase information.Also,the method could improve the lateral resolution by enhancing aperture beam directivity.Compared to the phase coherence weighted algorithm SCF and CCF,the TFM-PCSV has higher tolerance to the error of phases.
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