Interactive Volume Visualization for Electromagnetic Environment on 3D Globe

3D visualization on electromagnetic environment (EME) is one of the most important research fields in virtual battle space. This paper presents a novel approach on visualizing the 3D EME by direct volume rendering on 3D globe. 3D power volumetric data is calculated based on the Longley-Rice radio propagation model(Irregular Terrain Model, ITM), which takes into account the effects of irregular terrain and atmosphere, and the data are rendered on 3D globe by assigning different color and opacity depending on user's interactive input with color picker. We also propose an interactive method to show detailed information of EME at given place. This approach provides excellent decision supporting and plan-aiding for users.