Suppressing Reflected Guided Waves From Contaminated Borehole Radar Data
Suppressing Reflected Guided Waves From Contaminated Borehole Radar Data
复制标题
抑制受污染的钻孔雷达数据的反射导波
DOI:
10.1109/lgrs.2018.2880753
复制
发表时间:
2019
影响因子:
4.8
通讯作者:
I. Mason
中科院分区:
文献类型:
--
作者:
J. Huo;Binzhong Zhou;Qing;I. Mason
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