Title :
EM scattering from dielectric sea surface by the ray-tracing method
Author :
Meng, Xi ; Guo, Li-Xin ; Sun, Jie-Jing
Author_Institution :
Sch. of Phys. & Optoelectron. Eng., Xidian Univ., Xi´an, China
Abstract :
For the EM scattering problem, the multiple scattering plays an important role in accurate RCS calculation, especially when the wind speed upon sea surface is large. Meanwhile, as is known that the ray-tracing method is a highly powerful technique to deal with multiple reflection problems. Therefore, the ray-tracing algorithm described in this paper, is ultilized to tackle with the EM scattering problem from dielectric sea surface. In the ray-tracing method, the Geometrical Optics is used to determine the ray propagation paths, while Physical Optics is applied to calculate the field contribution of each ray hitting an object. We test this method using a simple examples. Our theoretical results are generally in good agreement with the simulation results by the Physical Optics based on FEKO. In the end, the RCS of a dielectric sea surface by ray-tracing method is compared with the MoM by FEKO. Good agreement is found between the analytic solution and ray-tracing method.
Keywords :
electromagnetic wave scattering; method of moments; oceanography; physical optics; ray tracing; EM scattering problem; FEKO; RCS calculation; dielectric sea surface; geometrical optics; multiple reflection problem; multiple scattering; physical optics; ray propagation path; ray-tracing algorithm; ray-tracing method; wind speed; Dielectrics; Method of moments; Optical surface waves; Ray tracing; Scattering; Sea surface; Vectors;
Conference_Titel :
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI
Conference_Location :
Beijing
DOI :
10.1109/URSIGASS.2014.6929632