Terahertz/mm wave imaging simulation software

被引：0

作者：

Fetterman, M. R. ^{[1
]}

Dougherty, J. ^{[1
]}

Kiser, W. L., Jr. ^{[1
]}

机构：

[1] Penn State Electroopt Ctr, 222 Northpointe Blvd, Freeport, PA 16229 USA

来源：

TERAHERTZ PHYSICS, DEVICES, AND SYSTEMS | 2006年 / 6373卷

关键词：

ray-tracing; millimeter wave; terahertz wave; imaging; terahertz spectroscopy; scene simulation;

D O I：

10.1117/12.685555

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have developed a mm wave/terahertz imaging simulation package from COTS graphic software and custom MATLAB code. In this scheme, a commercial ray-tracing package was used to simulate the emission and reflections of radiation from scenes incorporating highly realistic imagery. Accurate material properties were assigned to objects in the scenes, with values obtained from the literature, and from our own terahertz spectroscopy measurements. The images were then post-processed with custom Matlab code to include the blur introduced by the imaging system and noise levels arising from system electronics and detector noise. The Matlab code was also used to simulate the effect of fog, an important aspect for mm wave imaging systems. Several types of image scenes were evaluated, including bar targets, contrast detail targets, a person in a portal screening situation, and a sailboat on the open ocean. The images produced by this simulation are currently being used as guidance for a 94 GHz passive mm wave imaging system, but have broad applicability for frequencies extending into the terahertz region.

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