GPRSIM Ground Penetrating Radar Simulation Software. The original 2D modelling software for GPR that began development in 1990 and became a full commercial software in 1994 with the release of GPRSIM for DOS. GPRSIM was converted to windows in 2001 and continually developed in the last 10 years to bring the most comprehensive simulator using extended ray trace algorithms. Easy drawing menus and antenna impulse and directional response setting menus, as well as decoupled raypaths and energy being flexibly set by the designer. Any conceivable 2D model can be draw or imported into the software for predicting GPR radargrams over model structures.