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| | Abstract | | This paper describes results of 3-D imaging of faults in Nakatatsu mine, Japan, with the directional borehole radar. The receiving antenna in the radar is the coaxial-fed circular dipole array antenna. The array data is acquired in singlehole measurement with the antenna. We proposed a method to construct 3-D images of a plane type reflector from the array data. A numerical example is given to verify the method. In this simulation, we generated the array data with the MoM ( Method of Moments ) modified for borehole radar. The field experiments were conducted to measure a fault in skarn with the directional borehole radar. We detected reflected waves from the faults, and constructed 3-D images of the fault actually. |
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