大视场消色差温度补偿型风成像干涉仪调制度的分析与计算

简要论述了大视场、消色差、温度补偿型风成像干涉仪用于高层探测的基本原理.对自行设计的风成像干涉仪的调制度进行了理论分析与计算，推导了调制度的理论表达式.采用计算机模拟，分析了仪器调制度随入射角的变化关系.当调制度大于075时，风成像干涉仪视场角可达129°，充分显示了大视场、高调制度的显著特点.分析了玻璃折射率对调制度的影响，得到了调制度取得最大值时玻璃的优化组合；分析了温度对调制度的影响，得到了调制度随着温度变化的曲线.此研究为高层大气探测理论的发展、大气探测以及大视场、消色差、温度补偿型风成像干涉仪的研制提供了重要的理论依据及实践指导. 关键词： 干涉成像技术 迈克尔逊干涉仪 调制度 双光束干涉

Analysis and calculation of the modulation depth of the Michelson interferometer with wide field, chromatic compensation and thermal compensation

Principle of the measurement of the upper atmospheric wind field using a Michelson interferometer with wide field, chromatic compensation and thermal compensation is briefly described. The modulation depth of the self developed wind imaging interferometer is analyzed and calculated, and the expression of the modulation depth is derived. Computer simulation is adopted, and the dependence of the modulation depth on the angle is analyzed. The field of view of the wind imaging interferometer is 129°when modulation depth is greater than 075, which fully shows the advantages of wide field and high modulation depth. The dependence of the modulation depth on the refractive index of glass is analyzed, and the optimized material is given. The dependence of the modulation depth on temperature is analyzed, and the curve is given. The research has important theoretical significance and practical value both for the research and development of the Michelson Interferometer with wide field, chromatic compensation and thermal compensation and the detection of the upper atmospheric wind field.