ALEXANDRIA, Va., Jan. 23 -- United States Patent no. 12,190,025, issued on Jan. 7, was assigned to ANSYS INC. (Canonsburg, Pa.).
"Rough surface model for shooting and bouncing rays" was invented by Daniel R. Rey (Evanston, Ill.), Stefano M. Canta (Skokie, Ill.) and Robert A. Kipp (Hinsdale, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method is disclosed for augmenting the SBR model used in EM field simulation by modeling the specular coherent and diffuse incoherent components of the field scattered by rough surfaces using statistical characteristics of surface roughness. For each projected ray-tube footprint, the magnitude of the coherent radiated field is attenuated with a scalar factor, while the...