What is the difference between the RL-GO method in Feko and SBR?
RL-GO: Ray Launching Geometrical Optics
SBR: Shooting and Bouncing Rays
RL-GO and SBR are very similar, because both are a ray launching method which is different from a ray tracing method.
An important difference between the ray-tracing and ray-launching methods is that ray-tracing methods (such as SRT) trace rays backward from every result pixel to the transmitter, while ray-launching methods (such as SBR) launch a number of rays from the transmitter and calculate their paths from there (from the WinProp user guide).