太赫兹单频雷达的二维成像仿真  

2-D imaging simulation of THz single frequency radar

作　　者：於建生 张静[2,3] 尹治平[3] 

机构地区：[1]海军驻合肥地区军事代表室,安徽合肥230009 [2]合肥工业大学仪器科学与光电工程学院,安徽合肥230009 [3]合肥工业大学光电技术研究院,安徽合肥230009

出　　处：《太赫兹科学与电子信息学报》2014年第4期501-504,共4页Journal of Terahertz Science and Electronic Information Technology

摘　　要：当目标相对雷达存在二维转动时,即使采用单频雷达也可获得目标的二维图像。特别是在目标围绕2根垂直于雷达视线的正交转轴旋转时,成像投影平面垂直于雷达视线,获得视角类似于光学照相机的成像结果。分析了单频雷达二维成像的原理,并利用图形电磁计算软件(GRECO)模拟1.5 THz单频雷达的坦克模型回波,通过二维快速傅里叶变换(FFT)进行二维方位向压缩,获得目标的侧视图像。The 2-D imaging will be realized by using single-frequency radar, when the target executes 2-D rotation relative to the radar. Especially when the target rotates around two orthogonal rotation axes which are both perpendicular to the radar line-of-sight, therefore the projection image plane is perpendicular to the radar line-of-sight, the image whose angle of sight is similar as photographic camera will be obtained. The principle of 2-D imaging using single frequency radar is analyzed. The single frequency THz(at 1.5 THz) radar echo from a tank model is simulated by using GRECO(Graphical Electromagnetic Computing) software. The side view of the model is obtained through 2-D azimuth compression using Fast Fourier Transform(FFT).

关 键 词：单频雷达 二维成像 正交转轴 多普勒频率 

分 类 号：TN957.52[电子电信—信号与信息处理]