高光譜儀的光機構分析與模擬｜國立中央大學博碩士論文系統

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研究生：	謝承育 Cheng-Yu Hsieh
論文名稱：	高光譜儀的光機構分析與模擬 Opto-mechanical analysis and simulation of the HyperSCAN
指導教授：	郭政靈 Cheng-Ling Kuo
口試委員:
學位類別：	碩士 Master
系所名稱：	地球科學學院 - 太空科學與工程學系 Department of Space Science and Engineering
論文出版年：	2021
畢業學年度：	109
語文別：	中文
論文頁數：	80
中文關鍵詞：	高光譜儀
外文關鍵詞：	Hyperspectral imaging
相關次數：	點閱：20 下載：0
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Hyper-SCAN為中央大學太空科技中心之計畫中交由本團隊設
計製作之高光譜儀系統，預計搭載於 12U的立方衛星上。此高光譜
儀之特色為利用較低的成本製作出體積小、重量輕的機構。儀器使
用推掃式方法來獲取高光譜影像，視角大約在 5.8度，具連續光譜
範圍為 460nm~650 nm以及高光譜分辨率 (~ 1nm)。
本論文之目的在於對高光譜儀之工程體進行組裝以及校正實
驗，包含焦平面校正、 FOV量測、波長校正等實驗室內實驗，以改
善目前缺失以及建議未來的版本。另外高光譜儀系統的成敗關鍵最
重要的是焦平面的成像位置，我們利用實際的組裝實驗以及光譜量
測，來估計對焦平面距離的影響。並且使用 ANSYS進行機構模
擬，包含熱分析、模態分析、暫態結構分析、隨機振動分析等，用
來評估高光譜飛行體的效能影響。

Hyper-SCAN (Spectral Camera A Nalyzer) is a hyperspectral imager, one of the scientific payloads onboard the 12U CubeSat, designed and ensemble by the Space Optics Laboratory Center for Astronautical Physics & Engineering, National Central University. The key features of this hyperspectral imager have a compact size, lightweight, and low cost. The Hyper-SCAN adopts a push-broom method to acquire hyperspectral images with a FOV (5.8 degrees), a continuous visual band (460-650 nm), and a high-resolution bandwidth (~1nm).
In this thesis, we calibrated the hyperspectral imager system and study the caused errors in the distance of the focal plane due to the integration process and its space environment. We utilize the assembling experiment and spectral measurement results to evaluate the impacts on the focal plane. Using ANSYS, we also simulate the changing effects of optical mechanism on the Hyper-SCAN through thermal analysis, modal analysis, transient structural analysis and random vibration analysis. These analysis results will be used to improve and guarantee the performance of the Hyper-SCAN flight model.

摘要............................................................... I
Abstract ............................................................ II
目錄.............................................................. III
圖目錄............................................................. VI
表目錄........................................................... VIII
第一章 緒論......................................................... 1
1 科學目標 ...................................................... 2
2 論文架構 ...................................................... 2
第二章 高光譜儀系統................................................. 4
1高光譜儀成像原理 .............................................. 4
1.1 光柵/稜鏡型 ............................................... 4
1.2 濾波片型 .................................................. 6
1.3 干涉成像型 ................................................ 6
2 高光譜儀機構 .................................................. 7
2.1 鏡頭 ...................................................... 8
2.2 反射鏡 ................................................... 10
2.3 光柵
................................................ 10
2.4 影像感測器 ............................................... 10
3 高光譜儀系統組裝 ............................................. 12
3.1 表面微弧處理 ............................................. 12
3.2 鏡片黏貼 ................................................. 14
3.2.1
3.2.1 鏡片黏貼器材鏡片黏貼器材.................................................................................. 1414
3.2.2
3.2.2 鏡片黏貼步驟鏡片黏貼步驟.................................................................................. 1717
3.3 機構量測 ................................................. 18
第三章 實驗室校正.................................................. 20
1 焦平面校正實驗 ............................................... 20
1.1 焦平面校正目的 ........................................... 20
1.2 實驗器材與配置 ........................................... 21
1.3 實驗步驟 ................................................. 23
1.4 實驗結果 ................................................. 24
2 FOV量測 .................................................... 27
2.1 FOV量測目的 ............................................ 27
2.2 實驗器材與配置 ........................................... 27
2.3 實驗步驟 ................................................. 28
2.4 實驗結果 ................................................. 29
3波長校正實驗 ................................................. 31
3.1 波長校正目的 ............................................. 31
3.2 實驗器材配置 ............................................. 31
3.3 實驗步驟 ................................................. 33
3.4 實驗結果 ................................................. 34
第四章 有限元素模擬................................................ 39
1模擬相關設定 ................................................. 39
1.1有限元素模型 ............................................. 40
1.2材料屬性 ................................................. 41
1.3網格劃分 ................................................. 42
2 熱分析 ....................................................... 44
2.1 穩態熱分析 ............................................... 44
2.2 熱應力分析 ............................................... 47
3振動分析 ..................................................... 51
3.1模態分析 ................................................. 51
3.2 暫態結構分析 ............................................. 53
3.3 隨機振動分析 ............................................. 57
第五章 結論與未來工作.............................................. 62
1 結論 ......................................................... 62
2 未來工作 ..................................................... 64
參考資料........................................................... 65
                                

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