Extracting Curvature Information From Low Fidelity Mesh for Electromagnetic Ray-Tracing Simulations in Automotive Scenarios

When performing electromagnetic ray-tracing simulation for radar-environment scenarios, we often deal with a low-fidelity triangle-based surface mesh. The flat triangles composing the objects lead to wrong RCS values because they deviate significantly from the original curved surface. Therefore, in this work, we present a method to estimate the curvature of the actual curved surface enabling us to find the intersection between the rays and the surface.