Mathematical Modeling of THz Point Spread Function and Simulation of THz Imaging Systems
Mathematical Modeling of THz Point Spread Function and Simulation of THz Imaging Systems
复制标题
太赫兹点扩散函数的数学建模与太赫兹成像系统的仿真
DOI：
10.1109/tthz.2017.2750690
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发表时间：
2017-11-01
影响因子：
3.2
通讯作者：
Ahi, Kiarash
中科院分区：
文献类型：
--
作者：
Ahi, Kiarash
本文提出了一个全面的理论内聚数学建模和仿真太赫兹成像系统。为了对点扩散函数（PSF）进行数学建模，将光谱、吸收系数、光束发散度和焦深等系统和传输变量纳入高斯光束分布中。光栅扫描过程在数学上被建模为目标函数和PSF的卷积。模拟透射太赫兹图像的结果。与实验太赫兹图像相比，模拟的太赫兹图像在细节的位置和结构相似性方面表现出很高的准确性。
This paper presents a comprehensive theory for cohesive mathematical modeling and simulation of THz imaging systems. For mathematical modeling of the point spread function (PSF), system and transmission variables such as spectrum, absorption coefficient, beam divergence, and depth of focus are incorporated into the Gaussian beam distribution. The raster scanning process is mathematically modeled as the convolution of the object function and the PSF. Simulated transmission THz images are achieved as a result. The simulated THz images, compared to the experimental THz images, show great accuracy in terms of the location of the details and structural similarity.