|
|
|
| A directional borehole radar 3D imaging algorithm based on arctangent method |
| LIU Si-Xin, WANG Wen-Tian, LU Qi, LI Hong-Qing, FU Lei |
| College of Geo-Exploration Sciences and Technology,Jilin University,Changchun 130026,China |
|
|
|
|
Abstract As a special mode of GPR, the directional borehole radar system can not only detect underground target depth and the radial distance but also identify the azimuth of target, and then it uses the azimuth for 3D imaging. The directional drilling radar in this paper consists of a transmitting antenna and four receiving antennas, and the four receiving antennas are distributed on the ring perpendicular to the borehole axis. Based on the insignificant difference between the four different receiving antenna signals, the authors propose the arctangent method for calculating azimuth angle. The combination of the azimuth angle and the signal produces the horizontal and vertical slice data, thus eventually realizing the borehole radar 3-D imaging algorithm. Finally, the effectiveness of the algorithm is verified by numerical simulation results.
|
|
Received: 05 June 2017
Published: 03 April 2018
|
|
|
|
|
|
| [1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
| [2] |
XIAO Guan-Hua, ZHANG Wei, CHEN Heng-Chun, ZHUO Wu, WANG Yan-Jun, REN Li-Ying. Application of shallow seismic reflection surveys in the exploration of urban underground space in Jinan[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 96-103. |
|
|
|
|
