Near–Surface Seismic Processing/Refraction
RadExPro includes Plus–Minus and GRM methods for seismic refraction.
First–break picking is made semi–automatically for all shot points at once, in one window.
In the automatic mode of Plus–Minus method, refracting boundaries are built in one click—the only thing required is prior assignment of time–curve segments to layers. In the manual mode, an experienced geophysicist can control the whole process and make some fine–tuning at any stage: building composite travel time curves, leveling of reciprocal times, computing velocity analysis and time–depth functions, and, finally, building the refraction boundaries.
In cases that are more complicated, use of GRM instead of Plus–Minus allows simultaneous reconstruction of both geometry of refracting boundaries and lateral changes of velocities along them more accurately.