臺灣博碩士論文加值系統

論文摘要
人類的日常生活對各種太空任務與衛星提供的服務依賴日深。然而伴隨太空活動產生了許多太空碎片，使得因這些碎片撞擊導致嚴重危害的機率快速提高。因此研究太空中超高速撞擊變成一項刻不容緩的工作。
相對於其重要性，目前對太空中超高速撞擊的動力學機制所知卻非常少，有鑑於此NASA and US Department of Defense 於1986年9月5日在太空中進行了一次實驗。將Delta - 180 火箭的第二節與第三節於軌道上實際撞擊，並動用其位於全球的觀測站收集到非常豐富且珍貴的資料。
本文同時利用參數變動法及統計力學的方法來分析這次實驗中由Eglin AFB Radar量測到的資料。最後成功的反推出撞擊瞬間兩者質心速度變化的情況，並顯示出在初始條件不足的情況下採用統計力學的方法會比使用參數變動法更加合適。

Abstract
The dependence on space missions and satellites of human life grows increasingly significant each year. However the debris impact caused hazard grows even faster. Thus, to study the hyper-velocity impact in space becomes a fact.
Not much is known about the dynamics of collision in space. NASA and US Department of Defense performed an on-orbit satellites colliding experiment to gain more knowledge about the dynamics of collision in space. On Sep 5 1986 at 17:53 UT, satellite 16937 and 16938, the second stage and third stage of delta-180 rocket, collided above the Pacific Ocean. Observing groups all over the world surveilled the entire process and the debris evolution after collision. Plentiful data was gathered.
In this thesis, both traditional perturbation method and statistical mechanics approaches are applied to analyze the Eglin AFB radar measurement results of this experiment. The ultimate goal of this analysis is trying to find out the mass versus ejecta velocity relation to build up hyper-velocity impact dynamical model. The changed velocity of both satellites caused by colliding in this experiment is extracted successful. Since the lack of information on all debris's mass, the study can't be performed too well. However the statistical mechanics approach in analyzing such event under incomplete initial conditions has proven to be more adequate than the perturbation method.

中文摘要
英文摘要
目錄
Chapter 1 緒論 1
Chapter 2 實驗背景概述 3
Chapter 3分析之理論基礎 6
3.1 參數變動法 6
3.2 統計力學法 12
Chapter 4 實驗結果與分析 22
4.1 實驗結果概述與定性分析 22
4.2 應用參數變動法分析 26
4.3 應用統計力學方法分析 28
Chapter 5 討論 31
Chapter 6 結論與展望 38
Appendix
參考資料
附圖

Reference
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