Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope

Jun-qing, 朱俊青 Zhu; Wei, 沙巍 Sha; Chang-zheng, 陈长征 Chen; Xing-xiang, 张星祥 Zhang; Jianyue, 任建岳 Ren

doi:10.3788/ope.20162405.1118

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Mechanism Of Micro-vibration Affecting Imaging1

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“…When the satellite is on orbit, the space camera motion which caused by micro-vibration disturbance may affect the camera's imaging, as shown in Fig. 1 , which mainly includes four aspects [4] : 1) The camera has convected motion relative to object, which results in image motion on the FPA (focal plane assembly). 2) There are relative motion between optical surfaces, which result in image motion on the focal plane and wave-front error of optical system.…”

Section: Mechanism Of Micro-vibration Affecting Imagingmentioning

confidence: 99%

Micro-vibration analysis and verification of space camera based on integrated model

Jun

2023

AOPC 2023: Infrared Devices and Infrared Technology; And Terahertz Technology and Applications

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Section: Mechanism Of Micro-vibration Affecting Imagingmentioning

confidence: 99%

Micro-vibration analysis and verification of space camera based on integrated model

Jun

2023

AOPC 2023: Infrared Devices and Infrared Technology; And Terahertz Technology and Applications

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Micro-vibration suppression methods and key technologies for high-precision space optical instruments

Wang

et al. 2021

Acta Astronautica

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Design of Positioning Mechanism Fit Clearances Based on On-Orbit Re-Orientation Accuracy

Yang

Zhao

et al. 2019

Applied Sciences

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The factors affecting the re-orientation accuracy of the on-orbit replaceable optical unit were studied, and the mathematical models of the relationships between fit clearances of positioning mechanisms and the limits of rotation angles were deduced. When the relative position relationship of positioning mechanisms was determined, fit clearances were designed according to the requirement of the rotation angle limits, and the rotation angle limits were determined to ensure that the angles were within the index range. Theodolites were used to measure the re-orientation angles of the optical unit, and the errors between the measurement angles and the real angles were deduced. Then, the numerical simulation proved that the errors were within limits. The microgravity test environment was established, and the weight of the optical unit was unloaded by a suspension method to simulate the state of the optical unit when it was replaced on orbit. The test results confirmed the correctness of the design method.

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Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope

Cited by 3 publications

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Micro-vibration analysis and verification of space camera based on integrated model

Micro-vibration analysis and verification of space camera based on integrated model

Micro-vibration suppression methods and key technologies for high-precision space optical instruments

Design of Positioning Mechanism Fit Clearances Based on On-Orbit Re-Orientation Accuracy

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