扇束TDLAS层析成像在有限数据下的气体浓度分布

2012 IEEE International Conference on Imaging Systems and Techniques Proceedings Pub Date : 2012-07-16 DOI:10.1109/IST.2012.6295544

Chang Liu, Lijun Xu, Z. Cao, Yuanhong Yang

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引用次数: 3

摘要

本文介绍了一种基于可调谐二极管激光吸收光谱(TDLAS)的有限数据条件下气体浓度分布的扇束层析成像技术。扇形光束由准直激光器通过圆柱透镜产生，穿过目标区域，由七个光电二极管接收器检测。与传统的计算机断层扫描相比，具有先验信息的代数重建技术(ART)只需要5个视角，数据极为有限，而不是所有角度的数据。利用该方法共得到35个投影，用于重建瓦斯浓度分布图像。重构结果验证了该方法的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Fan-beam TDLAS tomography for gas concentration distribution with limited data

In this paper, fan-beam tomography for gas concentration distribution with limited data based on tunable diode laser absorption spectroscopy (TDLAS) was introduced. Generated by a well-collimated laser through a cylindrical lens, the fan beam laser crossed the target region and was detected by seven photodiode receivers. Compared with the way traditional computer tomography was implemented, algebraic reconstruction technique (ART) with a priori information only requires five viewing angles with severely limited data instead of data from all angles. A total of thirty five projections were obtained to reconstruct the image of gas concentration distribution by using this method. The reconstructed results validated the feasibility of this approach.

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2012 IEEE International Conference on Imaging Systems and Techniques Proceedings

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