CAJ | 학술논문

为了对PGP成像光谱仪所获得的光谱数据进行定量化分析，需对PGP 成像光谱仪进行光谱定标，以获得各光谱通道的中心波长、光谱分辨率及成像光谱仪的光谱弯曲等光谱特性信息。采用单色准直光法设计了一套全视场自动化的光谱定标系统，系统中引入球面镜为待测的成像光谱仪光谱定标提供准直光，通过可自动控制的折转镜改变定标入射光线的入射角，以此实现待测成像光谱仪空间维不同视场的自动化光谱定标。运用该定标系统对PGP成像光谱仪进行光谱定标实验，得到该成像光谱仪的光谱性能参数，并结合定标系统的结构特点，对实验的结果进行了精度分析。实验分析结果表明该系统对PGP 成像光谱仪的中心波长定标精度达到0．1nm，光谱分辨率定标精度达到1．3％。该研究设计的全视场自动化光谱定标系统具有结构新颖紧凑、通用性较强、光谱定标精度较高等特点，且由于自动化的控制，避免了由于人为参与定标过程所带来的额外误差。该系统可用于实现PGP成像光谱仪及其他同类型成像光谱仪的光谱定标。
위료대PGP성상광보의소획득적광보수거진행정양화분석，수대PGP 성상광보의진행광보정표，이획득각광보통도적중심파장、광보분변솔급성상광보의적광보만곡등광보특성신식。채용단색준직광법설계료일투전시장자동화적광보정표계통，계통중인입구면경위대측적성상광보의광보정표제공준직광，통과가자동공제적절전경개변정표입사광선적입사각，이차실현대측성상광보의공간유불동시장적자동화광보정표。운용해정표계통대PGP성상광보의진행광보정표실험，득도해성상광보의적광보성능삼수，병결합정표계통적결구특점，대실험적결과진행료정도분석。실험분석결과표명해계통대PGP 성상광보의적중심파장정표정도체도0．1nm，광보분변솔정표정도체도1．3％。해연구설계적전시장자동화광보정표계통구유결구신영긴주、통용성교강、광보정표정도교고등특점，차유우자동화적공제，피면료유우인위삼여정표과정소대래적액외오차。해계통가용우실현PGP성상광보의급기타동류형성상광보의적광보정표。
In order to analyze spectral data quantitatively which is obtained by prism-grating- prism imaging spectrometer,spec-tral calibration is required in order to determine spectral characteristics of PGP imaging spectrometer,such as the center wave-length of every spectral channel,spectral resolution and spectral bending.A spectral calibration system of full field based on col-limated monochromatic light method is designed.Spherical mirror is used to provide collimated light,and a freely sliding and ro-tating folding mirror is adopted to change the angle of incident light in order to realize full-field and automatic calibration of ima-ging spectrometer.Experiments of spectral calibration have been done for PGP imaging spectrometer to obtain parameters of spectral performance,and accuracy analysis combined with the structural features of the entire spectral calibration system have been done.Analysis results indicate that spectral calibration accuracy of the calibration system reaches 0. 1 nm,and the band-width accuracy reaches 1. 3%.The calibration system has merits of small size,better commonality,high precision and so on, and because of adopting the control of automation,the additional errors which are caused by human are avoided.The calibration system can be used for spectral calibration of other imaging spectrometers whose structures are similar to PGP.