超光谱全偏振成像仪中的液晶偏振态分析器的优化设计

摘要超光谱全偏振成像技术可实现目标图像、光谱、全偏振信息的一体获取。基于偏振态分析器的液晶器件在宽光谱范围的优化设计，需要关于液晶器件详细的光谱行为的知识。两种液晶器件在这里被研究，铁电液晶和液晶相位可变延迟器。偏振态分析器能够测量斯托克斯矢量的偏振状态，这种能力需要系统矩阵的条件数，，在合适的宽光谱范围接近最优。这里采用遗传算法做这种优化方法，以及仿真结果。本文在此基础上，介绍了研究超光谱全偏振成像技术的背景、意义和理论基础，提出了一种应用遗传算法的宽波段（430-900nm和900-1700nm）液晶偏振态分析器的优化设计。研究结果包括：宽波段液晶偏振态分析器的算法设计，分别基于2个铁电液晶和液晶相位可变延迟器，其材料特性是取自测量值。28698
关键词高光谱成像全偏振铁电液晶液晶可变相位延迟器
毕业论文设计说明书外文摘要
Title    A optimal design of liquid crystal polarization analyzer of Hyperspectral imaging full polarimetry
Abstract
Hyperspectral imaging full polarimetry can achieve a method of real-time measuring the spectrum, polarization and the target image. The optimal design over a broad spectral range of Liquid Crystal (LC) based Polarization State Analyzers (PSA), requires detailed knowledge of the spectral behavior of the LCs. Two LC technologies are investigated here, Ferroelectric LC (FLC), and Liquid Crystal Variable Retarders (LCVR). A PSA is capable of measuring the Stokes vector of a polarization state, This ability needs the condition number of these system matrices, , close to optimal performance in a suitable wide spectral range. I present here both a method to do this optimization using a genetic algorithm, as well as simulation results. This paper introduces the background, significance and theoretical basis of hyperspectral imaging full polarimetry on this basis, proposes a optimal design of liquid crystal polarization analyzer of a wide range(430-900 nm and 900-1700 nm) using a genetic algorithm. Our results include a arithmetic design of liquid crystal polarization analyzer of a wide range, respectively based on 2 Ferroelectric Liquid Crystals and Polarization State Analyzers, whose material properties are taken from measured values.
Keywords Hyperspectral imaging Full polarimetry Ferroelectric Liquid Crystal
Liquid Crystal Variable Retarders
目   次
1 绪论    1
1.1 超光谱全偏振成像技术简介    1
1.2 超光谱全偏振成像技术的背景与意义    1
1.3 国内外超光谱全偏振成像技术的发展与现状    1
2 超光谱全偏振成像技术的理论基础    2
2.1 光谱和偏振成像技术的基本原理    2
2.2 干涉型超光谱全偏振成像仪的系统模型和工作原理    2
2.3 宽波段液晶偏振态分析器的结构形式    3
3 宽波段FLC偏振态分析器的优化设计    5
3.1 算法处理    5
3.2 遗传优化    8
3.3 结果    10
4 宽波段LCVR偏振态分析器的优化设计    15
4.1 算法处理    15
4.2 结果    17
结论    20
致谢    21
参考文献22
1 绪论超光谱全偏振成像仪中的液晶偏振态分析器的优化设计:http://www.751com.cn/wuli/lunwen_23653.html