多角度偏振探测技术在地物目标识别中的应用研究

	多角度偏振探测技术在地物目标识别中的应用研究
其他题名	Study on the Applications of Multi-angle Polarization Detection Technique in the Recognition of Ground Objects
	苏志强
学位类型	硕士
导师	颜昌翔
	2015-10
学位授予单位	中国科学院大学
学位专业	光学工程
关键词	偏振遥感偏振度指标论证复折射率粗糙度
摘要	偏振探测是一种新型的遥感探测技术，可以有效克服传统遥感存在的缺点，同时，也可以获得传统遥感无法提供的信息。然而，当前关于偏振探测技术在地物目标识别的应用上尚处于基础研究阶段。本文将多角度探测技术与偏振技术相结合，对其在地物目标识别应用中的相关理论与技术进行了研究，主要内容如下：首先，本文对偏振探测技术的发展现状进行了总结，包括偏振探测技术在不同领域的应用情况以及当前偏振探测仪器的研究进展情况，并提出了本文的研究任务。其次，推导了目标的偏振特性模型，基于此模型通过对不同目标的偏振特性进行测定，首次对目标的固有参数（折射率、消光系数、表面粗糙度）进行了定量反演，阐明了偏振技术应用于定量遥感的可能性。再次，以折射率、消光系数以及表面粗糙度作为目标反演的指标参数，采用蒙特卡罗分析和非线性最小二乘法对多角度偏振探测仪器的相关参数对目标反演的影响进行了分析，包括仪器的光谱与光谱分辨率、空间分辨率、偏振测量精度、信噪比、多角度探测中的探测角度等，为多角度偏振探测仪器的设计提供了指导。最后，利用实验室研制的偏振探测仪器进行了外场实验，通过对典型目标采集图像，分析了偏振成像的优势，进而提出了基于偏振图像实现场景反演的算法。
其他摘要	Polarization detection is a new kind of remote sensing technique that can overcome the disadvantages of the traditional techniques, and it can also obtain the information that the traditional techniques cannot provide. However, application of the polarization detection technique on ground object’s recognition is still in the state of fundamental research. This paper conducts the study on the relevant thesis and techniques in the ground objects’ recognition by means of combining the multi-angle detection with polarization detection. The main contents are as follows: Firstly, the present status of the development of polarization detection technology is summarized, including the application of polarization detection in different fields and the research progress of the polarization detection instrument, and then the task of this paper is also presented. Secondly, this paper derives the polarization model of targets minutely, based on which the intrinsic parameters (refractive index, extinction coefficient and surface roughness) of different targets are quantitatively determined, which provides the possibility that polarization detection can be used in quantitative remote sensing. Then, taking the refractive index, extinction coefficient and surface roughness as the parameters for target’s revision, the influence on polarization revision of the relative parameters of multi- angle polarization detection instrument is analyzed by using Monte Carlo analysis and nonlinear least square method, including the spectral and spectral resolution, spatial resolution, polarization accuracy of the instrument, the signal to noise ratio and the multi-angle detection, which provides guidance for the design of the instrument. Finally, using the polarization detection instrument developed by laboratory, field experiments are carried out. By collecting images of typical target, we make a detailed analysis of the advantages of polarization imaging, and then an algorithm on the revision of a scene based on polarization images is proposed.
语种	中文
文献类型	学位论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/49322
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	苏志强. 多角度偏振探测技术在地物目标识别中的应用研究[D]. 中国科学院大学,2015.

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