Reconstruct 3D Geometry of Target using Differentiable SAR Renderer

The paper proposes a differentiable SAR renderer. Inspired by the differentiable optical renderer, rasterization and depth buffering become continuous. Different from the optical one, SAR renderer introduces the projection plane to calculate the occlusion between facets, and the mapping plane to image. Taking T72 model as an example, we realize its forward 2D imaging and backward 3D reconstruction from binary masks.