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Integration, Alignment and Verification of Optical System Assembly for FORMOSAT-5

机译:FORMOSAT-5光学系统组件的集成,对准和验证

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FORMOSAT-5 consists of a spacecraft bus and an electro-optical payload. The payload is an f/8 Cassegrain type telescope with 3.6-m effective focal length. The spacecraft has a ground sampling distance of 2-m for panchromatic and 4-m for multispectral bands, with a 24-km swath width. FORMOSAT-5 is the first space program that National Space Organization (NSPO) takes full responsibility for the complete satellite and payload system engineering. The optical system assembly (OSA) has been successfully aligned and is now undergoing final performance verification tests at system level. To help create this unique instrument, NSPO has developed the computer aided alignment method assisted with the mechanical ground support equipment to carry out the assembly, alignment, and verification of the complex systems. This method offers an integrated capability for interferometric alignment and characterization of the large instrument. A detail OSA integration and verification steps, including primary mirror, secondary mirror, corrector lens and baffles alignment are presented. This paper describes the overall capability of this method and uses decomposed Zernike polynomials from the alignment and characterization of the OSA to verify the reduction of the wavefront errors and misalignments. It further demonstrates the successful completion of the instrument and satisfaction with the main system requirements.
机译:FORMOSAT-5由航天器总线和电光有效载荷组成。有效载荷是f / 8卡塞格林式望远镜,有效焦距为3.6 m。该航天器的全地面采样距离为2米,全光谱波段为4米,幅宽为24公里。 FORMOSAT-5是美国国家空间组织(NSPO)全面负责卫星和有效载荷系统工程的第一个太空计划。光学系统组件(OSA)已成功对齐,目前正在系统级别进行最终性能验证测试。为了帮助创建这种独特的仪器,NSPO开发了计算机辅助对中方法,并结合了机械地面支持设备来执行复杂系统的组装,对中和验证。该方法提供了用于大型仪器的干涉对准和特性分析的集成功能。给出了详细的OSA集成和验证步骤,包括主镜,副镜,校正镜和挡板对齐。本文介绍了该方法的整体功能,并使用通过OSA对准和表征而分解的Zernike多项式来验证波前误差和未对准的减少。它进一步证明了仪器的成功完成以及对主要系统要求的满足。

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