| 基于谱剖面技术的路基病害地质雷达探测方法研究 |
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| 引用本文： | 杨峰,彭苏萍,冯正和,苏红旗,郝清. 基于谱剖面技术的路基病害地质雷达探测方法研究[J]. 公路交通科技, 2007, 24(5): 6-9 |
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| 作者姓名： | 杨峰 彭苏萍 冯正和 苏红旗 郝清 |
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| 作者单位： | 1. 中国矿业大学,计算机系,北京,100083
2. 清华大学,电子工程系,北京,100084 |
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| 基金项目： | 交通部西部交通建设科技资助项目(200431800007)，北京市科技计划资助项目(Y0304008040311) |
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| 摘 要： | 路基病害与地质雷达接收到的频率信号是密切相关的,针对北京市道路路面检测的实际需要,进行了路面下空洞及松散区域等隐伏病害的识别研究。通过总结电磁波在地层中传播的响应,分析了仅从时间剖面上识别路基病害的局限性,提出了对数功率谱分析路基隐伏病害的观点,把时间剖面转换为谱剖面。空洞病害对电磁波的频谱响应具有较高灵敏度,利用对数功率谱算法和高斯窗口函数来计算时间窗口的对数功率谱剖面,提高了对空洞这类隐伏病害的识别能力。经过实际测试证明,利用该技术来分析路基隐伏病害具有良好的效果。
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| 关 键 词： | 道路工程 路基病害 地质雷达 谱剖面技术 对数功率谱 电磁波响应 |
| 文章编号： | 1002-0268（2007）05-0006-04 |
| 修稿时间： | 2005-12-16 |
Research on Ground Penetrating Radar(GPR)Exploration on Subgrade Failure Based on Spectrum Profile |
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| YANG Feng,PENG Su-ping,FENG Zheng-he,SU Hong-qi,HAO Qing. Research on Ground Penetrating Radar(GPR)Exploration on Subgrade Failure Based on Spectrum Profile[J]. Journal of Highway and Transportation Research and Development, 2007, 24(5): 6-9 |
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| Authors: | YANG Feng PENG Su-ping FENG Zheng-he SU Hong-qi HAO Qing |
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| Abstract: | Subgrade failure is relative to spectrum signal received by ground penetrating radar.For the practical exploring demand of Beijing road surface,the method to identify hidden diseases in subgrade such as cavity and loose zone is studied.On the basis of summarizing the layer response to electromagnetic wave and analyzing the limitation identifying diseases.The viewpoint of transforming time section into spectrum section for explanation is put forward.The spectrum response of electromagnetic wave from cavity is of high sensitivity,so spectrum section obtained by using the method of log-power spectrum and gauss window function improves the identifying diseases capability.The testing result shows that spectrum section technology is efficient to analyze hidden diseases in subgrade. |
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| Keywords: | road engineering subgrade failure ground penetrating radar(GRP) spectrum section technology log-power spectrum electromagnetic wave response |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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