Ultrasonic Underground Imaging Using Amplitude Correlation Synthesizing Method
スポンサーリンク
概要
- 論文の詳細を見る
An amplitude correlation synthesis processing (ACSP) method is proposed for ultrasonic underground imaging, in order to reduce the error image reconstructed with the low-frequency signal received by linear array receivers. In contrast to the previous method of special polarity correlation processing (SPCP), the amplitudes of received signals corresponding to a processing point, in every subway group, is multiplied according to polarity condition, and all the conditional multiplication outputs are synthesized, in the ACSP method. For the experiment, an electromagnetic induction type sound source is employed as a powerful impulse incident ultrasound. A comparison of the imaging results of bodies buried 1 m underground, derived both by the ACSP and SPCP methods shows that the new method eliminates most of the error images, and hence its efficiency for imaging with a low signal-to-noise ratio (SNR) signal is verified.
- 社団法人応用物理学会の論文
- 1999-05-30
著者
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TANAKA Takashi
Department of Physics, Faculty of Science, Okayama University
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WATANABE Tsutomu
Department of Applied Physics, Nagoya University
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MOTOOKA Seiichi
Department of Electronics, Chiba Institute of Technology
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Tao Liang
Department Of Electrical Electronics And Computer Engineering. Faculty Of Engineering Chiba Institut
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Motooka S
Department Of Electrical Electronics And Computer Engineering. Faculty Of Engineering Chiba Institut
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Motooka Seiichi
Department Of Electronics
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MURAYAMA Shigeki
Department of Control Engineering, Ishikawajima, Harima Heavy Industries Co., Ltd.
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IHARA Yoshihisa
Department of Control Engineering, Ishikawajima, Harima Heavy Industries Co., Ltd.
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Tanaka Takashi
Department Of Internal Medicine Fukui Cardiovascular Center
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Murayama Shigeki
Department Of Control Engineering Ishikawajima Harima Heavy Industries Co. Ltd.
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Ihara Yoshihisa
Department Of Control Engineering Ishikawajima Harima Heavy Industries Co. Ltd.
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Watanabe Tsutomu
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Tanaka Takashi
Department Of Central Clinical Laboratory Teikyo University Hospital
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Tanaka Takashi
Department Of Electronics Engineering Chiba Institute Of Technology
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Motooka Seiichi
Department of Electrical, Electronics and Computer Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
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