What is VOACAP and why is it better than other models?
VOACAP is a modified version of IONCAP. It is a model that has been under development by the U.S. Government since 1942. The strength of the model is that it uses world maps of ionospheric parameters to construct the ionospheric path and uses path-specific statistics to evaluate the system performance factors. There is no claim that it is better than any other model. “Better” is usually in the eye of the user and is based on how well a model works for a particular application. IONCAP was selected by the VOA in 1985 because it provided the system performance analysis capability we needed for design specifications and it had a proven track record.
