A Local Ray Incidence-Based Scattering Model for Targets on a Complex Rough Surface

This paper proposes a novel high-frequency scattering model for targets on complex rough surfaces. The core innovation is a local ray incidence-based technique that computes the reflection and multi-reflection components from targets and the coupling scattering components between targets and the background. This approach generates ray tubes exclusively from the target facet model. The background facet model is subsequently processed to perform ray-triangle intersection tests, while coupling scat