编码掩模红外成像的建模与性能分析

张傲; 汪清; 杨敬钰; 孙懿

编码掩模红外成像的建模与性能分析

1.
天津大学电子信息工程学院,天津 300072;
2.
天津津航技术物理研究所,天津 300308

基金项目:

国家自然科学基金(61101223);教育部博士基金(20110032120087)

详细信息

作者简介:
张傲(1988-),男,硕士生,主要从事成像系统与微波信道的研究与建模。Email:zhangao@tju.edu.cn;汪清(1982-),女,副教授,主要从事无线通信、电波传播、被动雷达方面的研究。Email:wangq@tju.edu.cn

张傲(1988-),男,硕士生,主要从事成像系统与微波信道的研究与建模。Email:zhangao@tju.edu.cn;汪清(1982-),女,副教授,主要从事无线通信、电波传播、被动雷达方面的研究。Email:wangq@tju.edu.cn

中图分类号: TN21

Modeling and performance analysis for masks in coded mask infrared imaging

1.
School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China;
2.
Tianjin Jinhang Institute of Technology Physics,Tianjin 300308,China

摘要: 针对编码掩模红外成像系统提出了一种建模方法。该模型将成像系统视为由两个功能部分组成,一部分为编码掩模与理想聚焦透镜的理想成像,另一部分为实际透镜自身的非理想成像。据此,系统点扩散函数可以由掩模结构的衍射模式和实际透镜的点扩散函数联合表示。此外,文中对视场内倾斜入射平面波的成像结果进行分析,从而得到了视场内的点扩散函数的变动情况。由码型及相应点扩散函数的指标评价结果可以看出,文中提出的基于Dammann阵列的码型结构对直接成像和图像还原处理具有较为平衡的性能。实验表明,对于编码掩模直接成像系统的码型中应当具有较多的随机性结构,而对于能够做进一步图像还原处理的系统码型中应当具有较多的周期性结构。
- 编码掩模 /
- 红外成像 /
- 建模 /
- 点扩散函数 /
- Dammann光栅
Abstract: The model for infrared coded mask imaging systems was presented. It was composed with two functional components, the coded mask imaging with ideal focused lenses and the imperfection of practical lenses. The system's point spread function(PSF) can then be represented by the diffraction pattern of the mask and the PSF of the practical lenses. The imaging results with inclined plane waves were also analyzed to achieve the variation of PSF within the view field. According to indices for mask pattern evaluation and system's PSF assessment, mask pattern we proposed based on Dammann grating had a balanced performance for direct imaging and imaging reconstruction. Experiment shows that mask pattern for direct imaging should have more random structures, while more periodic structures in system with image reconstruction.
- coded mask /
- infrared imaging /
- modeling /
- point spread function /
- Dammann grating

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编码掩模红外成像的建模与性能分析

Modeling and performance analysis for masks in coded mask infrared imaging

计量

编码掩模红外成像的建模与性能分析

1. 天津大学电子信息工程学院,天津 300072;

2. 天津津航技术物理研究所,天津 300308

English Abstract

Modeling and performance analysis for masks in coded mask infrared imaging

1. School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China;

2. Tianjin Jinhang Institute of Technology Physics,Tianjin 300308,China

全文HTML

目录

留言板

编码掩模红外成像的建模与性能分析

Modeling and performance analysis for masks in coded mask infrared imaging

计量

出版历程

编码掩模红外成像的建模与性能分析

1. 天津大学电子信息工程学院,天津 300072; 2. 天津津航技术物理研究所,天津 300308

English Abstract

Modeling and performance analysis for masks in coded mask infrared imaging

1. School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China; 2. Tianjin Jinhang Institute of Technology Physics,Tianjin 300308,China

全文HTML

目录

1. 天津大学电子信息工程学院,天津 300072;

2. 天津津航技术物理研究所,天津 300308

1. School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China;

2. Tianjin Jinhang Institute of Technology Physics,Tianjin 300308,China