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.
刘四新, 王文天, 鹿琪, 李宏卿, 傅磊. 基于反正切法的定向钻孔雷达三维成像算法[J]. 物探与化探, 2018, 42(2): 358-362.
LIU Si-Xin, WANG Wen-Tian, LU Qi, LI Hong-Qing, FU Lei. A directional borehole radar 3D imaging algorithm based on arctangent method. Geophysical and Geochemical Exploration, 2018, 42(2): 358-362.
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