Radar Cross Section (RCS) and Scattering

With the integration of HFSS SBR+, ANSYS HFSS is empowered with new capability to model radar signatures of electrically very large targets and scenes. Shooting and bouncing rays (SBR) is a ray-tracing technique based on Physical Optics (PO), which has been extended to multi-bounce interactions through Geometric Optics (GO) ray tracing. HFSS SBR+ is suitable for efficiently solving electromagnetic problems that are hundreds and thousands of wavelengths in size. The integration of HFSS SBR+ to the available high-frequency EM solver technologies in ANSYS Electronics Desktop allows radar designers to apply the best simulation technologies for predicting radar signatures of structures ranging from sub-wavelengths to kilo-wavelengths. HFSS SBR+ is ideal for the design of collision detection and avoidance systems and stealth technology.

Powered by advanced, edge diffraction physics from the PTD and UTD frameworks, HFSS SBR+ provides accurate and efficient large-scale electromagnetic modeling for structures containing metals and dielectrics, as well as structures with dielectric losses, multi-layer dielectrics and absorbing materials. ANSYS now provides a single framework for all high-frequency EM solvers to facilitate a smooth and unified workflow, for solving these complex electromagnetic problems. Additionally, for radar signature analyses, HFSS SBR+ features monostatic and bi-static RCS modeling capabilities with the implementation of plane wave excitations.


  • Industry-leading shooting and bouncing ray (SBR+) technology with advanced diffraction physics
  • Highly efficient analyses of large targets
  • Modern, easy-to-use interface that incorporates model pre-processing, simulation and results post-processing
  • Accelerated processing with high-performance computing options (can be scaled efficiently on multiple CPU cores and leverages NVIDIA GPUs)
  • Ability to import realistic CAD models of large aircraft, ships, missiles and ground vehicles
  • Integrated within ANSYS Electronics Desktop for comprehensive multiphysics simulation
  • Continuous development and support

Radar Cross Section and Scattering

Bi-static RCS of a ship (104.6m x 16m x 18.5m) solved at 1 GHz in ANSYS Electronics Desktop. Angle of incident plane wave is at 45 degrees elevation, and 45 degrees off the bow.