临近空间大气风场星载Fabry-Perot干涉仪设计及仿真结果分析OA

Currently,there are relatively few spaceborne methods for detecting near-space atmospher-ic wind fields,and the Fabry-Perot Interferometer(FPI)is one of the more important and widely used detection techniques.To address the gap in China's space-based FPI wind sensing capabilities,the Na-tional Space Science Center developed a spaceborne FPI wind interferometer.This paper mainly intro-duces this instrument's optical design,structural design,thermal control design,optical simulation,and result analysis.First,the optical design is discussed based on the wideband detection requirements,and the imaging system's image quality is evaluated.Then,based on optical simulation data,wind speed in-version and accuracy analysis of the spaceborne FPI instrument are conducted.The wind speed errors at the 557.7 nm and 762.0 nm bands are-1.722 m·s-1 and-2.3672 m·s-1,respectively,indicating that the spaceborne instrument design meets the wind measurement requirements.Then,the key points of the in-strument's structural design and the thermal control solution for the imaging part are presented,along with a translational filter switching device driven by a trapezoidal lead screw and a micro gear stepping motor or micro linear motor.The paper also explores the relationship between the temperature control accuracy of the instrument's core components(the etalon)and wind measurement errors.A combined active and passive design is adopted to minimize the impact of temperature fluctuations on the results,which is verified with simulation results.