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Propagation characteristics in open-groove waveguides surrounded by rough sidewalls Ohtaki, Y. Sengoku, M. Sakurai, K. Yamaguchi, Y. Abe, T. ©(1990) IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained the IEEE. Radio propagation groove waveguide rough surface attenuation constant field distribution The radio propagation characteristics in groove-shaped roads surrounded by rough surface sidewalls are presented. Typical sidewalls are snowpack in heavy snow regions or buildings in urban areas. In this analysis, such roads are modeled by a straight groove waveguide with statistically rough sidewalls. A simple geometrical optical approach is applied to calculate the field strength along the longitudinal direction of the road as well as transversely across the road. The theoretical results are compared with previously presented experimental results. The theoretical results show that the surface roughness causes an additional propagation loss in regions far from the transmitting point and that the field strength in the cross section exhibits a cosine distribution with a slightly changing magnitude. These theoretical characteristics agree with the experimental results. IEEE 1990-08 eng journal article http://hdl.handle.net/10191/6187 https://niigata-u.repo.nii.ac.jp/records/1717 info:doi/10.1109/15.57111 AA0066781X 00189375 IEEE Transactions on Electromagnetic Compatibility IEEE Transactions on Electromagnetic Compatibility 32 3 177 184 https://niigata-u.repo.nii.ac.jp/record/1717/files/6_0006.pdf application/pdf 1.2 MB 2019-07-29