NMO: Normal Move-Out

In emanuelhuber/RGPR: Ground-penetrating radar (GPR) data visualisation, processing and delineation

Normal Move-Out

Description

Compute the Normal Move-Out (NMO) for a data set given a constant velocity (?? FIXME): The Normal Move-out is defined as the difference between the two-way time at a given offset and the two-way zero-offset time. We write the vertical two-way traveltime at zero offset

t_0 = t_{TWT}(x = 0) = \frac{2z}{v}

Therefore, the NMO-correction \Delta_{NMO} is

\Delta_{NMO} = t_{TWT}(x) - t_0

\Delta_{NMO} = t_0 (\sqrt{1 + \frac{x^2}{v^2 t_0^2}} - 1)

Usage

NMO(x, v = NULL)

## S4 method for signature 'GPR'
NMO(x, v = NULL)

Arguments

x	An object of the class GPR
v	A length-one numeric vector defining the radar wave velocity in the ground

emanuelhuber/RGPR documentation built on May 13, 2024, 9:31 p.m.