ANALYSIS OF A BOREHOLE RADAR IN CROSS-HOLE MODE

被引：75

作者：

SATO, M ^{[1
]}

THIERBACH, R ^{[1
]}

机构：

[1] GEOL SURVEY LOWER SAXONY,DEPT GEOPHYS,HANNOVER,GERMANY

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 1991年 / 29卷 / 06期

关键词：

D O I：

10.1109/36.101368

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We present a theoretical approach to the cross-hole radar measurements. An approximate analytical form for the current distribution on an antenna in a borehole is derived and the theoretical receiving signal of borehole radar in the cross-hole measurement is calculated. Theory is compared in the time-domain with the measured borehole radar signal obtained in a salt deposit. The radiation pattern of a borehole radar excited by a pulse is discussed. The accuracy of tomographic analysis, which is often applied to the cross-hole radar measurements, is strongly governed by this radiation pattern. We found that in practice, most borehole radars have a pattern of a lambda/2 dipole antenna. However, we pointed out that the radiation pattern can be deformed by short pulse excitation, loading by the surrounding media, and coupling to the logging cable.

引用

页码：899 / 904

页数：6

共 15 条

[1] MICROPROCESSOR-BASED DATA-ACQUISITION SYSTEM FOR A BOREHOLE RADAR [J].