用于电离层探测的远紫外成像光谱仪研究  

Study on far ultraviolet imaging spectrometer for ionosphere detection

作　　者：于磊[1,2] 王淑荣[1] 林冠宇[1] 于向阳[1] 汪龙祺[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京100039

出　　处：《仪器仪表学报》2011年第5期1151-1157,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(No.41074126)资助项目

摘　　要：电离层成像探测一直是我国大气遥感的一个薄弱环节。根据大气成像光谱探测原理,针对应用要求设计和研制了电离层探测成像光谱仪原理样机。样机采用一片离轴抛物镜与改进的Czerny-Turner光谱仪匹配的光学结构形式,工作波段为120~180 nm的远紫外波段。探测器选用了接收平面为微通道板（MCP）的光子计数型楔形阳极位敏探测器,在真空下实现对远紫外波段的探测。样机质量6.8 kg,体积360 mm×210 mm×250 mm。利用实验室真空系统与氘灯搭建了样机检测系统,获得了样机的基本性能参数。与国外方案结果对比表明,样机光谱分辨率为2.4 nm,空间分辨率75μm,对应地面分辨率约0.6 km,除传输效率略低外,其他各项指标均接近或达到先进水平,该成果对空间和大气遥感具有重要的研究和应用价值。Ionosphere imaging detection is one of the weak points in the studies of our atmospheric remote sensing.An ionosphere imaging spectrometer prototype was designed and manufactured,which aims at the application requirement and is based on the principle of atmospheric sounding.The prototype works in the waveband of 120~180 nm,consists of an off-axis parabolic mirror and a modified Czerny-Turner spectral imaging system.The receiving plane of the photon counting Wedge-Strip-Anode（WSA） detector is micro-channel planes.The mass of the prototype spectrometer is 6.8 kg,and the total volume is 360 mm×210 mm×250 mm.An experiment system was built,which consists of the vacuum system,the deuterium lamp,the monochrometer and the spectrometer prototype.Experiment results indicate that the spectral resolution is 2.4 nm,the spatial resolution is 0.6 km corresponding to 75 μm in the image plane;except that the transmission efficiency is a little lower,all the other specifications reach or are close to the advanced technical level compared with the results of foreign projects.The spectrometer prototype is important for the research and application of atmospheric remote sensing.

关 键 词：电离层 成像探测 光谱仪 光学设计 原理样机 分辨率 

分 类 号：O433.1[机械工程—光学工程] TH744.1[理学—光学]