TY - GEN
T1 - Improved SAH-BVH Accelerated SBR Method for RCS Computation of Complex Electromagnetic Targets
AU - Bao, Yuntian
AU - He, Mang
N1 - Publisher Copyright:
© 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - An efficient shooting and bouncing rays (SBR) method accelerated by an improved surface area heuristic (SAH) bounding volume hierarchy (BVH) is proposed for RCS computation of complex targets. To reduce the costly ray-triangle intersection tests, we construct BVH using an enhanced SAH that accounts for traversal probability and primitive distribution, achieving faster ray tracing than conventional SBR. For dielectric-coated targets, reflection coefficients are obtained via the transmission-line model, accurately handling oblique incidence and multiple reflections in layered media. Numerical results validate the method for both PEC and coated PEC targets.
AB - An efficient shooting and bouncing rays (SBR) method accelerated by an improved surface area heuristic (SAH) bounding volume hierarchy (BVH) is proposed for RCS computation of complex targets. To reduce the costly ray-triangle intersection tests, we construct BVH using an enhanced SAH that accounts for traversal probability and primitive distribution, achieving faster ray tracing than conventional SBR. For dielectric-coated targets, reflection coefficients are obtained via the transmission-line model, accurately handling oblique incidence and multiple reflections in layered media. Numerical results validate the method for both PEC and coated PEC targets.
KW - dielectric-coated targets
KW - improved SAH-BVH
KW - RCS
KW - shooting and bouncing rays
UR - https://www.scopus.com/pages/publications/105050635719
U2 - 10.1109/CSRSWTC71154.2026.11669551
DO - 10.1109/CSRSWTC71154.2026.11669551
M3 - Conference contribution
AN - SCOPUS:105050635719
T3 - CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings
BT - CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026
Y2 - 10 July 2026 through 12 July 2026
ER -