摘要
大光程差、宽场、消色差、热补偿型风成像干涉仪是在一定的基准光程差的基础上,通过动镜步进的方法,获得观测目标在一个波长范围内间隔为λ/4的4个干涉强度,并依此推算出高层大气的风速、气压、温度的新型风场探测装置。而在干涉仪的工程研制和实际风场测量过程中不可避免地存在着基准光程差误差、步长误差以及动镜倾斜误差等。为了精确地掌握这些误差对最终观测结果的影响以更好地满足风成像干涉仪的工程化和实际应用,对在一定的不确定度范围内的动镜倾斜误差进行了理论计算和分析,得到并给出了动镜倾斜误差的计算方法,计算了在误差允许范围内的动镜倾斜容限,并通过计算机模拟讨论并分析了研究结果。这些研究工作对风成像干涉仪的理论研究、技术创新、研制、性能改进和工程化都具有理论与实践指导意义,并为其更好地应用于高层大气风场被动探测提供了理论依据。
On fixed optical path difference, interference intensity of four steps in an interval of quarter of wavelength is achieved by moving mirror step of λ/4 for Michelson wind imaging interferometer （MWII） with large optical path difference, wide field, chromatic compensation and thermal compensation. In this way, the information of velocity, air pressure and temperature for aerosphere can be achieved. In this course, the error of fixed optical path difference, step error and tilting of the moving mirror will affect the results. To better meet the actual application and engineering for MWII, the tolerance of the error for tilting of the moving mirror is discussed in the range of allowance precision, the method of the error is derived, and the curves of the relationship between the temperature, velocity and the tilting of the moving mirror are simulated by computer. This work has a great meaning on the theory research, capability improvement, engineering of MWII and will be useful for the application of Michelson interferometer on the passive measurement of the wind field in the upper atmosphere.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2012年第11期92-98,共7页
Chinese Journal of Lasers
基金
国家自然科学基金重点项目(40537031)
国家自然科学基金(40375010、60278019)
国防基础科学研究项目(A1420080187)
国家重大科技专项(E03101112JC02)
陕西省科技攻关项目(2001K06-G12、2005K04-G18)
2010苏州大学省重点实验室专项项目(KJS1001)
陕西省教育厅科学研究计划项目(09JK799)资助课题
关键词
成像系统
风成像干涉仪
误差分析
动镜倾斜
imaging systems
wind imaging interferometer
error analysis
tilting of the moving mirror
