首页|Advancing Accuracy of SBR Method for RCS Prediction of Triangular Meshed Curved Targets Based on Curvature Wavefront Ray Tracing
Advancing Accuracy of SBR Method for RCS Prediction of Triangular Meshed Curved Targets Based on Curvature Wavefront Ray Tracing
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NETL
NSTL
IEEE
A more accurate shooting and bouncing ray method (SBR) based on curvature wavefront ray tracing is proposed for radar cross section (RCS) simulation of triangular meshed curved targets. The key idea is to approximate the ray tube of each triangle using the wavefront of its center ray, thus accurately characterizing the divergence factor during multiple reflections. Surface fitting and differential geometry techniques are used to reconstruct the curvature of the triangular mesh and calculate the wavefront variations of the ray tube during multiple reflections, while also accounting for thin-coated targets. Moreover, a curvature wavefront-based ray tracing method is developed, significantly enhancing the sampling accuracy. The accuracy of the proposed SBR is validated through comparison with the FEKO multilevel fast multipole method (FEKO-MLFMM), and the simulation time consumption is acceptable.
NETL
NSTL
IEEE
