星载小型线性渐变滤光片型成像光谱仪设计  

Design of Spaceborne Miniature Imaging Spectrometer Based on Linear Variable Filter

作　　者：李文杰[1] 王成良[1] 石斌斌[1] 欧阳琰[1] 彭赛阳 

机构地区：[1]空军预警学院,湖北武汉430019

出　　处：《红外》2015年第12期1-7,共7页Infrared

摘　　要：针对目前成像光谱仪在小卫星平台上的应用需求,设计了一种线性渐变滤光片型成像光谱仪。采用线性渐变滤光片作为分光器件,可实现结构小型化、缩短研发周期、减少研制成本,并能提高系统的空间分辨率、信噪比和可靠性。该方法适用于微纳卫星平台,因此具有良好的应用前景。通过总体设计确定了相关技术指标,并对其进行了分析和计算。在此基础上,对光学系统和分光系统的参数进行了设计。最后对系统的整体信噪比进行了分析。结果表明,该系统的成像性能优良,可满足观测需求,并达到了预期的设计目的,为下一步的系统实现提供了理论依据。According to the demand of imaging spectrometers for mini satellite platforms,an imaging spectrometer based on a linear variable filter is designed.By using the linear variable filter as a light splitter,the miniaturization of system structure,the reduction of development period and cost and the improvement of spatial resolution,signal-to-noise ratio and reliability can be realized.Because the method is suitable for micro/nano satellite platforms,it has a good application prospect.According to the overall design,the related specifications are determined,analyzed and calculated.On this basis,the parameters of the optical system and the splitter system are designed.Finally,the overall signal-to-noise ratio of the system is analyzed.The results show that the system has good imaging performance and can meet the observation requirement.Thus,the expected design purpose is achieved.The theoretical basis is provided for the implementation of the system in next step.

关 键 词：微纳卫星 线性渐变滤光片 成像光谱仪 小型化 空间分辨率 

分 类 号：V447[航空宇航科学与技术—飞行器设计]