基于太赫兹雷达阴影特性的目标结构推断技术OA
Target structure inference technology based on terahertz radar shadow characteristics
太赫兹雷达凭借其高分辨成像能力,能够使合成孔径雷达(SAR)图像中的阴影呈现出高清晰度与丰富细节.本文系统探究了太赫兹雷达阴影特性及其在结构反演中的应用价值.通过高塔、运动中的坦克、树木及日晷等典型目标的成像实验,验证了基于太赫兹雷达阴影特性的目标结构推断技术具有三大优势:阴影成像能有效消除高大建筑的叠掩现象,提供无模糊的几何轮廓;运动目标阴影呈现出稳定如光学图像的轮廓,为动目标结构判断提供了新依据;阴影还能揭示坦克炮管、日晷指针等延展型精细结构.研究表明,太赫兹雷达阴影特性可有效弥补传统基于散射强度分析方法的不足,为雷达目标结构推断带来了一种可靠的新技术思路.
Terahertz radar,with its high-resolution imaging capability,renders shadows in Synthetic Aperture Radar(SAR)images with high clarity and rich detail,offering a new dimension for target structure inference.This paper systematically explores the shadow characteristics of terahertz radar and their application value in structure inversion.Through imaging experiments on typical targets such as tall towers,moving tanks,trees,and sundials,three major advantages are validated:shadow imaging effectively eliminates the layover effect in tall buildings,providing unambiguous geometric contours;shadows of moving targets present stable,optically similar outlines,offering a new approach for judging the structure of moving objects;and shadows reliably reveal extended fine structures such as tank barrels and gnomon.The research demonstrates that the shadow characteristics of terahertz radar can effectively compensate for the shortcomings of traditional scattering intensity-based methods,providing a highly reliable technical approach for target structure inference.
范磊;杨琪;曾鑫;刘康;王宏强;邓彬
国防科技大学电子科学学院,湖南长沙 410073国防科技大学电子科学学院,湖南长沙 410073北京无线电测量研究所,北京 100039国防科技大学电子科学学院,湖南长沙 410073国防科技大学电子科学学院,湖南长沙 410073国防科技大学电子科学学院,湖南长沙 410073
信息技术与安全科学
太赫兹雷达阴影特性结构推断高分辨率几何特征提取
terahertz radarshadow inferencestructure deductionhigh-resolution imaginggeometric feature extraction
《太赫兹科学与电子信息学报》 2026 (2)
206-212,7
国家自然科学基金资助项目(623221226220159162035014)湖南省科技创新计划资助项目(2024RC3143)
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