太赫兹科学与电子信息学报2017，Vol.15Issue(2)：165-171,7.DOI:10.11805/TKYDA201702.0165
太赫兹雷达细微结构成像仿真与特性分析
Radar imaging simulation and characteristics analysis of the fine structure at terahertz frequencies
杨啸宇 1高敬坤 1邓彬 1王宏强 1秦玉亮1
作者信息
- 1. 国防科学技术大学空间电子技术研究所,湖南长沙 410073
- 折叠
摘要
Abstract
The fine structure of conductor surface can cause impact on the amplitude, phase of the scattered fields at THz frequencies. For analyzing these effects, periodic and reticulate structure whose dimension assimilates to wavelength, and rivets array structure with Perfect Electric Conductor(PEC) are taken as examples to illustrate the characteristics of the scattered fields of different elevation angles in radar imaging. The convolution back projection algorithm is utilized to image the multi-angles, multi-frequency monostatic scattered fields echo data generated by the commercial software platform. The simulation results show that the scattering characteristics of different fine structures differ greatly. By employing the range profile analysis method, the reasons that form different features in the image domain are obtained. It is found that the mechanism of different image features can be resorted to the effects of coherent cancellation, coherent enhancement and the virtual ghosts. These results show that the THz wave owns an unique depictive ability for the fine structure.关键词
转台成像/细微结构/太赫兹雷达/特性分析Key words
turntable imaging/fine structure/terahertz radar/characteristic analysis分类
信息技术与安全科学引用本文复制引用
杨啸宇,高敬坤,邓彬,王宏强,秦玉亮..太赫兹雷达细微结构成像仿真与特性分析[J].太赫兹科学与电子信息学报,2017,15(2):165-171,7.
