• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Subsurface Sensing Technologies and Applications >Characterization of Local 3-D Rough Dielectric Surfaces Using Standoff GPR Measurements with Widebeam Antennas
【24h】

Characterization of Local 3-D Rough Dielectric Surfaces Using Standoff GPR Measurements with Widebeam Antennas

机译：局部3-D粗糙介电表面的表征，采用宽带波束天线的间隙GPR测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In real life most ground surfaces are not flat but rough. The observation of surface roughness depends on the wavelength and angle of the incident wave. In order to be able to detect shallow subsurface objects, on one hand we need to use higher frequencies to achieve better range resolution. One the other hand we have to deal with rough surfaces relative to shorter wavelengths. In this paper a wideband ground-penetrating radar (GPR) phase measurement and processing technique for characterizing three-dimensional (3-D) rough dielectric surfaces is presented. The method is based on the measurement of phase data by a standoff GPR with wide-beam antennas at short range over 3-D rough ground surfaces. The principle of this method was verified experimentally in the measurement of a composite surface. The height of the composite surface varies from 0 to 8 cm. The antennas are open-ended waveguide antennas whose frequency range is 2.3 GHz to 4.3 GHz. They are broadband, have low gain and wide beamwidth. The experimental tests demonstrate that the 3-D rough surfaces can be characterized locally by using a monochromatic and multifrequency broadband phase processing and imaging method. The results show good agreement between the imagery of the surface height distribution obtained by this method and the actual geometry of the 3-D rough surfaces.
机译：在现实生活中，大多数地面不是平坦的而是粗糙的。表面粗糙度的观察取决于入射波的波长和角度。为了能够检测浅层地下物体，一方面，我们需要使用更高的频率以获得更好的距离分辨率。另一方面，我们必须处理相对于较短波长的粗糙表面。本文提出了一种用于表征三维（3-D）粗糙电介质表面的宽带探地雷达（GPR）相位测量和处理技术。该方法基于在远距离内在3-D粗糙地面上使用远距离宽波束天线通过隔离GPR测量相位数据。该方法的原理已在复合表面的测量中通过实验验证。复合表面的高度从0到8厘米不等。天线是频率范围为2.3 GHz至4.3 GHz的开放式波导天线。它们是宽带的，具有低增益和宽波束宽度。实验测试表明，使用单色和多频宽带相位处理和成像方法可以局部表征3D粗糙表面。结果表明，通过此方法获得的表面高度分布的图像与3-D粗糙表面的实际几何形状之间具有良好的一致性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号