可见光波段的矿石多角度反射偏振特性研究

发布时间：2018-01-09 07:04

本文关键词：可见光波段的矿石多角度反射偏振特性研究　出处：《激光技术》2017年01期 　论文类型：期刊论文

【摘要】：为了研究矿石的多角度偏振反射特性,采用改变光源入射角和探测角的方法,测量矿石在可见光波段的反射偏振光谱,并进行了理论分析和实验验证。结果表明,矿石的偏振度在可见光波段受波长影响较小,偏振度大小稳定,而入射角和探测角对矿石的偏振度光谱影响显著;随着入射角和探测角的增大,矿石均表现出先增大后减小的趋势,最大值出现在布儒斯特角附近;当入射角和探测角在55°~65°范围变化时,矿石偏振度差异显著,其中因组成颗粒较小结晶程度较高的玉髓偏振特性最强,而非晶质结构的蛋白石偏振特性最弱。该研究利用偏振度对矿石进行鉴别和分类,具有一定的可实行性,这为矿石检测提供了新的途径。
[Abstract]:In order to study the multi-angle polarization reflection characteristics of ore, the reflected polarization spectrum of ore in visible light band is measured by changing the incident angle of light source and detecting angle. The theoretical analysis and experimental results show that the degree of polarization of the ore is less affected by the wavelength in the visible light band, and the degree of polarization is stable, while the incidence angle and the detection angle have a significant effect on the polarization spectrum of the ore. With the increase of the incident angle and the detection angle, the ore shows a trend of first increasing and then decreasing, and the maximum appears near the Brewster angle. When the incidence angle and the detection angle change in the range of 55 掳~ 65 掳, the polarization degree of the ore varies significantly, and the polarization characteristic of the chalcedony is the strongest because of the smaller crystallinity of the composition particles. However, the polarization characteristics of opal with amorphous structure are the weakest. In this study, the degree of polarization is used to identify and classify ores, which has certain practicability, which provides a new way for ore detection.
【作者单位】：桂林电子科技大学电子工程与自动化学院;桂林电子科技大学广西自动检测技术与仪器重点实验室;桂林电子科技大学广西高校光电信息处理重点实验室;
【基金】：广西教育厅重点资助项目(ZD2014053) 广西自动检测技术与仪器重点实验室基金资助项目(YQ15111) 桂林电子科技大学创新团队资助项目
【分类号】：O436.3
【正文快照】： 引言早在20世纪70年代,偏振技术便被用于地球遥感研究。与传统的探测技术相比较,偏振探测技术丰富了被探测目标的维度信息,极大地提高了地物辨识的能力。目前偏振探测技术已经被广泛应用于资源调查、物质分类和目标识别等领域[1-3]。这一技术同时也为岩石矿物的识别和分类等方

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