Fast marching method-based bent-ray tracing for three-dimensional velocity imaging in mines
aState Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, 400044, China
bState Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430077, China
cSchool of Resources and Safety Engineering, Central South University, Changsha, 410083, China
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