• On which numerical method GprMax is based on?

GprMax is based on the Finite Difference Time Domain (FDTD) method pioneered by Keneath Yee in 1966.

•  What is the order of the finite difference scheme that GprMax uses?

GprMax employs a 2nd order in time and space FDTD scheme based on the rectangular Yee cell. A second order in time and forth order in space M(2,4) scheme is currently under development.

• Can I use GprMax for general FDTD modelling?

GprMax has been developed with the view of modelling GPR. However, it is a general solver and can be used to simulate a wide range of computational electromagnetics problems.