| 带有低通滤波的广义S变换在探地雷达层位识别中的应用 |
| |
| 引用本文： | 张先武,高云泽,方广有.带有低通滤波的广义S变换在探地雷达层位识别中的应用[J].地球物理学报,2013,56(1):309-316. |
| |
| 作者姓名： | 张先武 高云泽 方广有 |
| |
| 作者单位： | 1. 中国科学院电子学研究所, 北京 100190;
2. 中国科学院大学, 北京 100049 |
| |
| 基金项目： | 国家重点基础研究发展计划项目(2010CB73190105)资助 |
| |
| 摘 要： | 同其它分析时变信号的方法相比,S变换具有独特的优点.但是S变换的时窗函数形式固定,限制了其在信号分析和处理中的应用.针对这一问题,本文对S变换进行了改进和推广,在S变换的时窗函数中引入调节参数,同时将低通滤波函数融入其中,提出了一种广义S变换.通过调节参数大小来调节广义S变换的时间分辨率和频率分辨率,从而使该变换具有很强的适用性.本文使用该变换对实测探地雷达数据进行了层位识别研究,取得了较好的效果.
|
| 关 键 词： | 探地雷达 低通滤波 S变换 广义S变换 |
| 收稿时间： | 2011-12-02 |
Application of generalized S transform with lowpass filtering to layer recognition of Ground Penetrating Radar |
| |
| ZHANG Xian-Wu
,
GAO Yun-Ze
,
FANG Guang-You.Application of generalized S transform with lowpass filtering to layer recognition of Ground Penetrating Radar[J].Chinese Journal of Geophysics,2013,56(1):309-316. |
| |
| Authors: | ZHANG Xian-Wu GAO Yun-Ze FANG Guang-You |
| |
| Institution: | 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | Compared with other methods for analyzing time-varying signal, the S transform has many particular merits. But the window function of the S transform is fixed, which limits its application to signal analysis and processing. To solve this problem, this study improves and generalizes the S transform, introduces the modification parameters into the window function of the S transform and integrates the low-pass filtering function into it. And a generalized S transform is proposed. Temporal resolution and frequency resolution of the generalized S transform are regulated via adjusting the parameters. Consequently, the applicability of the generalized S transform is strongly enhanced. This work adopts the generalized S transform to conduct a layer-recognition study using ground penetrating radar data and achieves desirable results. |
| |
| Keywords: | Ground Penetrating Radar Lowpass filtering S transform Generalized S transform |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
