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| 根据反射声波相位信息识别分层介质结构 | |
| 引用本文： | 王露贤,王朔中,陈云飞,王润田,邹婷婷. 根据反射声波相位信息识别分层介质结构[J]. 应用科学学报, 2013, 31(3): 266-270. DOI: 10.3969/j.issn.0255-8297.2013.03.008 |
| 作者姓名： | 王露贤 王朔中 陈云飞 王润田 邹婷婷 |
| 作者单位： | 1. 上海大学通信与信息工程学院，上海2000722. 水下测控技术重点实验室，大连1160133. 中国科学院东海研究站，上海200032 |
| 基金项目： | 国家自然科学基金(No.61071187)；水下测控技术重点实验室基金(No.9140c260201110c26)资助 |
| 摘 要： | 通过提取分层介质声回波的相频特征信息，对物理性质未知的分层材料实现了有效的分类识别. 分类对象为单层材料、包含两种不同声速和密度的两种双层材料、外层较硬中间较软的三层结构，硬和软是指两种材料c值的相对大小. 数值模拟表明该方法对4种分层结构能进行有效识别. 采用优化的分类流程可减小测量的工 作量. |
| 关 键 词： | 声回波 分层介质 相位特征 分类 |
| 收稿时间： | 2012-11-21 |
| 修稿时间： | 2013-03-12 |
Classification of Layered Structures Using Phase Information of Reflected Sound |
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| WANG Lu-xian,WANG Shuo-zhong,CHEN Yun-fei,WANG Run-tian,ZOU Ting-ting. Classification of Layered Structures Using Phase Information of Reflected Sound[J]. Journal of Applied Sciences, 2013, 31(3): 266-270. DOI: 10.3969/j.issn.0255-8297.2013.03.008 | |
| Authors: | WANG Lu-xian WANG Shuo-zhong CHEN Yun-fei WANG Run-tian ZOU Ting-ting |
| Affiliation: | 1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China;2. Key Laboratory for Underwater Test and Control Technology, Dalian 116013, Liaoning Province, China;3. Shanghai Acoustics Laboratory, Chinese Academy of Sciences, Shanghai 200032, China |
| Abstract: | This paper presents a method for classification of layered materials with unknown physical properties based on the phase-frequency characteristics of acoustic reflection coefficients. Layered structures under consideration include a single layer material, double-layered plates with harder and softer materials on the two sides respectively, and a sandwich structure with a harder material as the outer layers and a softer material in the middle. A set of criteria for differentiating the types of structure is given. Numerical simulation shows effectiveness of the method with a high rate of correct classification. |
| Keywords: | acoustic reflection layered materials phase features classification |
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