| Presentation | 2021-11-11 Theoretical and Experimental Analysis of Terahertz Scattering from Rough Surfaces Suyun Wang, Takayoshi Yamada, Kun-Shan Chen, Yasuko Kasai, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we explore the terahertz scattering from statistically-specified randomly rough surfaces at 480 GHz. These contain eight reference surfaces made from Durable Resin V2 by 3D printing with the prescribed power spectral density and height probability density function, along with the RMS heights and correlation lengths. The dielectric constant of the material was measured by terahertz time-domain spectroscopy (THz-TDS). To better understand the physical mechanism of the terahertz scattering from random rough surfaces, the effects of root-mean-square (RMS) height, correlation length, dielectric constant, and probing frequency, polarization, and incidence angle were investigated. We applied the well-known advanced integral equation model (AIEM) to calculate HH- and VV-polarized scattering coefficients, both coherent and incoherent. Numerical results indicate that the diffuse scattering is enhanced when the RMS height increases, particularly in backscattering. As the correlation length varies, the scattering patterns illustrate a strong azimuthal dependence. We conducted measurements to measure the given rough surfaces by Picometrix T-Ray 4000. The measured results show that, at terahertz region, the reflectivity decreases as the surface roughness increases. Hence it is practically feasible to remote sensing of the rough surface by terahertz scattering. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Terahertz Scattering / Rough Surface / THz-TDS / T-Ray |
| Paper # | SANE2021-38 |
| Date of Issue | 2021-11-04 (SANE) |
| Conference Information | |
| Committee | SANE |
|---|---|
| Conference Date | 2021/11/11(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ICSANE2021/Workshop on subsurface electromagnetic measurement |
| Chair | Toshifumi Moriyama(Nagasaki Univ.) |
| Vice Chair | Makoto Tanaka(Tokai Univ.) / Takeshi Amishima(Mitsubishi Electric) |
| Secretary | Makoto Tanaka(Univ. of Tokyo) / Takeshi Amishima(ENRI) |
| Assistant | Takayuki Kitamura(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Space, Aeronautical and Navigational Electronics |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Theoretical and Experimental Analysis of Terahertz Scattering from Rough Surfaces |
| Sub Title (in English) | |
| Keyword(1) | Terahertz Scattering |
| Keyword(2) | Rough Surface |
| Keyword(3) | THz-TDS |
| Keyword(4) | T-Ray |
| 1st Author's Name | Suyun Wang |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Takayoshi Yamada |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Kun-Shan Chen |
| 3rd Author's Affiliation | Guilin University of Technology(Guilin University of Technology) |
| 4th Author's Name | Yasuko Kasai |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2021-11-11 |
| Paper # | SANE2021-38 |
| Volume (vol) | vol.121 |
| Number (no) | SANE-236 |
| Page | pp.pp.36-39(SANE), |
| #Pages | 4 |
| Date of Issue | 2021-11-04 (SANE) |