Suppressing Reflected Guided Waves From Contaminated Borehole Radar Data

Suppressing Reflected Guided Waves From Contaminated Borehole Radar Data
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抑制受污染的钻孔雷达数据的反射导波

DOI:
10.1109/lgrs.2018.2880753
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发表时间:
2019
影响因子:
4.8
通讯作者:
I. Mason
I. Mason
中科院分区:
工程技术2区
文献类型:
--
作者:
J. Huo;Binzhong Zhou;Qing;I. Mason

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在钻孔雷达 (BHR) 勘测中,如果雷达通过导电通信电缆悬挂或在导电水中运行,则可能会感应导波。当它们遇到阻抗变化时,例如在地质界面处,导波将被反射。这些反射导波(RGW)通常相对较强。它们在 B 扫描图像中呈现为斜条纹图案,并且严重污染了感兴趣的反射。在这封信中,我们比较了抑制 RGW 的三种信号处理方法:1)沿指定倾角运行移动平均误差滤波器,如 $\tau $ -p 滤波; 2)饼片频率-波数(F-K)滤波; 3)基于F-K迁移的滤波方法。第三种基于迁移的方法是新颖的。这三种方法都是基于RGW的特性和生成机制。使用单基地雷达系统收集的真实 BHR 数据说明了它们的相对有效性。
In borehole radar (BHR) surveys, if the radar is either suspended by a conductive communication cable or run in a conductive water, guided waves may be induced. When they encounter impedance changes, for example, at geological interfaces, the guided waves will be reflected. These reflected guided waves (RGWs) often are relatively strong. They present themselves as obliquely striped patterns in the B-scan image, and, severely contaminate the reflections of interest. In this letter, we compare three signal processing methods to suppress RGWs: 1) running a moving average error filter along a specified dip—as in $\tau $ -p filtering; 2) pie-slice frequency–wavenumber (F-K) filtering; and 3) F-K migration-based filtering method. The third migration-based method is novel. All three methods are based on the characteristics and generating mechanism of RGWs. Real BHR data collected with a monostatic radar system illustrate their relative effectiveness.
DOI: --
发表时间: 2005
期刊: 物理探査学会第112回学術講演会論文集
影响因子: --
作者:
Zhao Jianguo;Motoyuki Sato
通讯作者: Motoyuki Sato