分块主镜式相机共相位检测系统研究

发布时间：2018-05-31 03:44

本文选题：共相位 + piston误差　；参考：《北京理工大学》2016年硕士论文

【摘要】：随着分块主镜式光学遥感器在大口径高性能空间望远镜上越来越广泛的应用,共相位误差检测已成为实现分块主镜光学系统成像的重要任务之一。针对解决分块主镜技术面临的共相位误差检测问题,课题组提出一种基于色散瑞利干涉原理的piston误差检测方法,并据此理论在国防973项目中研制原理样机与检测系统,该系统体积大,重量大,测量时间长,且有机械运动。旨在克服原检测系统的一些缺陷,同时进一步验证色散瑞利干涉原理,本论文拟研制针对同轴三反式分块主镜相机的共相位误差检测系统。为设计新的共相位误差检测系统,本论文从检测原理、功能要求、整体设计与装配调试四个方面开展研究。在分析了共相位误差的检测原理后,本论文总结前期检测系统的缺陷,并据此对新的检测系统提出设计要求。在结构形式上将原本互相垂直的两个检测光路折转合并,共用一个底板和机箱,使检测系统具有紧凑化、整体化、仪器化的优点。在功能上采用并行检测方式,左右两子镜采样通道共用一个色散棱镜和相机,避免了机械运动;同时在piston误差检测光路中加入一路监测通道,用来监测环境干扰与系统振动,对piston误差测量结果予以补偿;设计色散棱镜插入机构,在piston误差检测光路中研制一套操作方便的功能切换结构,实现仪器对接调试与检测之间的功能切换。所设计的检测系统具有测量速度更快、结果更可靠、操作性更好等优点。并对新检测系统的所有零件做出设计、出图、加工并装调,最后将检测系统与实际检测光路对接,不断调试以进行共相位误差检测。
[Abstract]:With the increasing application of block primary mirror optical remote sensor in large aperture and high performance space telescope, the detection of common phase error has become one of the important tasks to realize the imaging of block primary mirror optical system. In order to solve the problem of common phase error detection in block primary mirror technology, a piston error detection method based on dispersive Rayleigh interference principle is proposed, and a prototype and detection system of the principle is developed in the national defense 973 project based on the theory. The system has the advantages of large volume, large weight, long measuring time and mechanical motion. In order to overcome some defects of the original detection system and to further verify the dispersive Rayleigh interference principle, this paper intends to develop a common phase error detection system for the coaxial trisection primary mirror camera. In order to design a new common phase error detection system, this paper studies the detection principle, functional requirements, overall design and assembly debugging. After analyzing the detection principle of the common phase error, this paper summarizes the defects of the early detection system and puts forward the design requirements for the new detection system. In the form of structure, the two detection optical paths which were originally perpendicular to each other were converted and combined, and the same backboard and chassis were shared, so that the detection system had the advantages of compact, integrated and instrumented. In the function of parallel detection, the two sub-mirror sampling channels share a dispersive prism and a camera to avoid mechanical motion. At the same time, a monitoring channel is added to the piston error detection optical path to monitor environmental interference and system vibration. The piston error measurement results are compensated, the dispersion prism insertion mechanism is designed, a set of functional switching structure is developed in the piston error detection optical path, and the function switch between the instrument docking and debugging and the detection is realized. The designed detection system has the advantages of faster measurement speed, more reliable results and better operation. All the parts of the new detection system are designed, mapped, machined and adjusted. Finally, the detection system is docked with the actual detection light path, and is continuously debugged to detect the common phase error.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH751

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