Radar Polarimetry Analysis Applied to Single-Hole Fully Polarimetric Borehole Radar

A fully polarimetric borehole radar system using four combinations of dipole and slot antennas was developed to acquire fully polarimetric data sets in drilled boreholes. First, to implement radar polarimetry analysis, a processing scheme suitable for analyzing a single-hole reflection data set acquired by the system is presented. This processing consists of antenna-characteristic compensation, migration for image reconstruction, and time-frequency analysis for single-frequency data set construction. Two polarimetric target decomposition methods, namely: 1) Pauli decomposition and 2) eigenvector-based decomposition, are applied to characterize the scattering problem of the subsurface fractures. The Pauli decomposition method provided important radar polarimetry information of fractures, and the eigenvector-based decomposition method made a significant contribution to understanding the scattering mechanisms from different fractures with different properties. Furthermore, information about fracture classification can be obtained by analysis of the H-alpha distribution provided by eigenvector-based decomposition of local radar image regions. The potential of polarimetric target decomposition techniques to fracture characterization is shown, which, in turn, provides valuable information about water permeabilities of fractures in hydrogeological studies

[1]  A. Poularikas.  The transforms and applications handbook , 2000 .

[2]  Motoyuki Sato,et al.  Subsurface cavity imaging by crosshole borehole radar measurements , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[3]  Shirley Dex,et al.  JR 旅客販売総合システム（マルス）における運用及び管理について , 1991 .

[4]  John E. Peterson,et al.  Applications of algebraic reconstruction techniques to crosshole seismic data , 1985 .

[5]  F. Rocca,et al.  SAR data focusing using seismic migration techniques , 1991 .

[6]  Motoyuki Sato,et al.  Application of borehole radar for subsurface physical measurement , 2004 .

[7]  Motoyuki Sato,et al.  Polarimetric borehole radar measurement at the Mirror Lake test site , 1999, Optics & Photonics.

[8]  John W. Lane,et al.  Use of borehole-radar methods to detect a saline tracer in fractured crystalline bedrock at Mirror Lake, Grafton County, New Hampshire, USA , 1996 .

[9]  John W. Lane,et al.  USE OF A MULTI-OFFSET BOREHOLE-RADAR REFLECTION METHOD IN FRACTURED CRYSTALLINE BEDROCK AT MIRROR LAKE, GRAFTON COUNTY, , 1998 .

[10]  R. Stolt.  MIGRATION BY FOURIER TRANSFORM , 1978 .

[11]  Motoyuki Sato,et al.  Polarimetric Borehole Radar System for Fracture Measurement , 2000 .

[12]  Tavi Murray,et al.  Englacial water distribution in a temperate glacier from surface and borehole radar velocity analysis , 2000, Journal of Glaciology.

[13]  M. Hellmann,et al.  Comparison of decompositions for pol-SAR image interpretation , 2000, IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120).

[14]  Motoyuki Sato,et al.  Subsurface fracture measurement with polarimetric borehole radar , 1999, IEEE Trans. Geosci. Remote. Sens..

[15]  O. Olsson,et al.  BOREHOLE RADAR APPLIED TO THE CHARACTERIZATION OF HYDRAULICALLY CONDUCTIVE FRACTURE ZONES IN CRYSTALLINE ROCK1 , 1992 .

[16]  Motoyuki Sato,et al.  Cross-polarization borehole radar measurements with a slot antenna , 1995 .

[17]  Eric Pottier,et al.  A review of target decomposition theorems in radar polarimetry , 1996, IEEE Trans. Geosci. Remote. Sens..

[18]  Motoyuki Sato,et al.  Development of a ground-based polarimetric broadband SAR system for noninvasive ground-truth validation in vegetation monitoring , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[19]  Yoshio Yamaguchi,et al.  Two-dimensional and full polarimetric imaging by a synthetic aperture FM-CW radar , 1995 .

[20]  Eric Pottier,et al.  An entropy based classification scheme for land applications of polarimetric SAR , 1997, IEEE Trans. Geosci. Remote. Sens..

[21]  Stewart Greenhalgh,et al.  Separation of upgoing and downgoing waves in vertical seismic profiling by contour‐slice filtering , 1985 .