首页 | 本学科首页   官方微博 | 高级检索  
     检索      

基于LCTF调谐的高光谱成像系统设计
引用本文:张冬英,洪津,汤伟平,杨伟锋,罗军,乔延利,张渫.基于LCTF调谐的高光谱成像系统设计[J].光谱学与光谱分析,2008,28(10):2455-2458.
作者姓名:张冬英  洪津  汤伟平  杨伟锋  罗军  乔延利  张渫
作者单位:中国科学院安徽光学精密机械研究所,安徽,合肥,230031;解放军炮兵学院,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031;解放军总后建筑工程研究所,陕西,西安,710032
基金项目:国家"863"计划基金项目
摘    要:提出一种新的轻小型高光谱成像系统,将液晶可调谐滤光片LCTF应用于高光谱成像技术,用电调谐的LCTF代替传统的机械滤光片转轮,在可见-近红外波段上可快速地实现波长的任意调谐。系统由光学镜头、LCTF和CCD探测器组成。文章首先详细描述了系统结构、光学设计及其工作原理;再利用该成像系统,以飞艇为平台进行了野外试验,获取了高光谱立体图像,所获取的图像有较高的空间分辨率和光谱分辨率;文章给出16个波段中546~600 nm的局部图像数据,最后对图像进行初步的数据处理,推导出地物420~720 nm的光谱反射率。试验验证了该成像系统的高光谱数据成像获取能力,成像数据可应用于光谱分析。

关 键 词:液晶可调谐滤光片  CCD  高光谱遥感
收稿时间:2007-03-18

Design of Hyperspectral Imaging System Based on LCTF
ZHANG Dong-ying,HONG Jin,TANG Wei-ping,YANG Wei-feng,LUO Jun,QIAO Yan-li,ZHANG Xie.Design of Hyperspectral Imaging System Based on LCTF[J].Spectroscopy and Spectral Analysis,2008,28(10):2455-2458.
Authors:ZHANG Dong-ying  HONG Jin  TANG Wei-ping  YANG Wei-feng  LUO Jun  QIAO Yan-li  ZHANG Xie
Institution:1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China2. Artillery Academy of PLA, Hefei 230031, China3. Construction Engineering Research Institute of the General Logistics Department of the PLA, Xi’an 710032, China
Abstract:A new compact lightweight imaging system for hyperspectral imaging is described. The system can be thought of as the substitute for traditional mechanical filter-wheel sensor. The system is based on different techniques. It uses an electronic controlled LCTF(liquid crystal tunable filter) which provided rapid and vibrationless selection of any wavelength in the visible to IR range. The imaging system consisted of an optic lens, a CRI VariSpec LCTF and a Dalsa 1M30 camera. First the outline of this system setup is presented, then the optics designed is introduced, next the working principle of LCTF is described in details. A field experiment with the imaging system loaded on an airship was carried out and collected hyperspectral solid image. The images obtained had higher spectral and spatial resolution. Some parts of the 540-600 nm components of the 16-band image cube were also shown. Finally, the data acquired were rough processed to get reflection spectrum(from 420 to 720 nm) of three targets. It is concluded that the experiment has proved that the imaging system is effective in obtaining hyperspectral data. The image captured by the system can be applied to spectral estimation, spectra based classification and spectral based analysis.
Keywords:CCD
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《光谱学与光谱分析》浏览原始摘要信息
点击此处可从《光谱学与光谱分析》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号