Shooting and bouncing rays
The shooting and bouncing rays (SBR) method in computational electromagnetics was first developed for computation of radar cross section (RCS)[1]. Since then, the method has been generalized to be used also for installed antenna performance. The SBR method is an approximate method applied to high frequencies. The method can be implemented for GPU computing, which makes the computation very efficient.
Theory
The first step in the SBR method is to use geometrical optics (ray-tracing) for computing equivalent currents, either on metallic structures or on an exit aperture. The scattered field is thereafter computed by integrating these currents using physical optics, by the Kirchhoff's diffraction formula.
Implementation in commercial software
The SBR method is implemented in the following commerical codes:
- CST Microwave Studio, Asymptotic Solver
- Ansys HFSS SBR+, previously Delcross Savant
- XGTD
See also
References
- ^ Ling, Hao; et al. (1989). "Shooting and bouncing rays: calculating the RCS of an arbitrarily shaped cavity". IEEE Transactions on Antennas and Propagation.
{{cite journal}}: Explicit use of et al. in:|first1=(help)