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Based on the theory of Visualization in Scientific Computing, we use Marching Cubes isosurface algorithm,
Multi-Isosurfaces algorithm and ray casting algorithms based on GPU to achieve the 3D visualization of electromagnetic
signal strength. It wouldn't make much sense for user to display the distribution of electromagnetic environment in isolation,
This paper, the distribution of electromagnetic signal strength is integrated in the battlefield scene, we achieve realtime
interactive of the battlefield electromagnetic distribution using VC++6.0 language and 3D OpenGL tool, enhance the
convenience and visual effects of operation. The result shows practical application value.