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- W2762279084 abstract "Research on the scattering behavior of terahertz (THz) waves plays a prominent part in the development of remote sensing and imaging systems. Due to the relatively short wavelengths of THz waves, materials that could be considered smooth at microwave band may begin to display rough surface in the THz region. To study the scattering characteristics and implement parameter estimation and imaging of rough surface rotating targets in the THz band, THz radar systems with carrier frequencies of 220 and 440 GHz were built, and experiments based on a series of rough surface cylinders were carried out. From the time–frequency distributions and imaging results, the transition of scattering characteristics from smooth surface to rough surface is clearly visible, which is consistent with the fact that as the roughness increases, there is an overall increase in diffuse scattering. In addition, methods of rotation period estimation and target size estimation were proposed and applied to experimental data of the THz radar systems, and their validities were verified by the high-precision estimation results." @default.
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- W2762279084 date "2017-10-02" @default.
- W2762279084 modified "2023-09-27" @default.
- W2762279084 title "Parameter estimation and imaging of rough surface rotating targets in the terahertz band" @default.
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- W2762279084 doi "https://doi.org/10.1117/1.jrs.11.045001" @default.
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