| 超声散射场自相关函数纵向特性 |
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| 引用本文： | 胡鹏,刘永辉,朱成.超声散射场自相关函数纵向特性[J].华中科技大学学报(自然科学版),2003,31(6):98-99,112. |
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| 作者姓名： | 胡鹏 刘永辉 朱成 |
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| 作者单位： | 1. 华中科技大学,土木工程与力学学院
2. 华中科技大学,电子与信息工程系 |
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| 基金项目： | 国家自然科学基金资助项目 (10 0 740 17) |
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| 摘 要： | 对粗糙界面反射超声散射场的纵向自相关函数进行了理论分析和实验研究．理论分析表明，由于超声散射场纵向自相关长度取决于界面散射声场的时间相干性，因而它最终取决于入射界面上的超声脉冲的时宽和声速．对此结论进行了实验验证，结果显示，理论分析和实验结果有很好的一致性．
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| 关 键 词： | 超声 散射场 自相关函数 |
| 文章编号： | 1671-4512(2003)06-0098-02 |
Longitudinal properties of auto-correlation function of scattering ultrasound field from a rough surface |
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| Hu Peng,Liu Yonghui,Zhu Cheng.Longitudinal properties of auto-correlation function of scattering ultrasound field from a rough surface[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(6):98-99,112. |
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| Authors: | Hu Peng Liu Yonghui Zhu Cheng |
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| Institution: | Hu Peng Liu Yonghui Zhu Cheng |
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| Abstract: | The longitudinal auto-correlation function of the sc at tering ultrasound field from a rough surface was studied theoretically and exper imentally. The theoretical analyses show that the length of longitudinal auto-c orrelation function is related to the spacial coherence of the scattering ultras ound field and depends on the sound velocity and the pulse duration of the ultra sound incident on the interface. To verify this theoretical conclusion, an exper iment was conducted. The experimental result is in good agreement with the theor etical one. |
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| Keywords: | ultrasound scattering field auto-correla tion function |
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