摘要
简述了新型宽场消色差温度补偿型风成像干涉仪(FATWINDII)的原理,利用等效法和近似法推导出FATWINDII系统响应率的表达式。在增加视场角和增大系统透过率的情况下可以提高系统响应率。根据FATWINDII系统补偿方案和结构参数,计算出迈克耳逊干涉仪的等效空气长度为14.4 cm,推导并计算出系统的透过率约为0.42。根据所用CCD探测器的技术指标和FATWINDII系统的结构参数,计算了系统响应率随视场角和感应像素数目的变化情况,进而分析解释了FATWINDII实验室星载模拟实验中实际CCD感光区域的面积为整个CCD面积的1/16。该研究为星载FATWINDII的设计、研制、定标及数据的后期处理提供了理论依据和实践指导。
The basic principle of the field-widened achromatic, temperature-compensated wind imaging interferometer （FATWINDII） is introduced. By using the equivalent and the approximation methods, the expression of the system responsivity in FATWINDII is deduced. The system responsivity can be improved by increasing the Field of View （FOV） and the transmittance of the FATWINDII. According to the structural parameters and compensation scheme of the FATWINDII, the air-equivalent length is 14.4 cm and the system transmittance is about 0.42. According to the specifications of Charge-Coupled Device （CCD） and the structural parameters of the FATWINDII, the variations of the system responsivity with the FOV and the pixel numbers are given analytically and simulated numerically. It is presented that the actual sensitive area is one over sixteen of the CCD in the FATWINDII laboratory space-borne simulation experiments. The study provides a theoretical basis and practical guidance for the design, development, calibration and data post- processing of the space-borne FATWINDII.
出处
《电光与控制》
北大核心
2016年第2期51-55,共5页
Electronics Optics & Control
基金
国家自然科学基金(40875013)
关键词
风成像干涉仪
系统响应率
像素
视场角
wind imaging interferometer
system responsivity
pixel
field of view
