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研究生:洪佩綺
研究生(外文):Pei-Cii Hong
論文名稱:福爾摩沙衛星五號先進電離層探測儀觀測全球離子密度分布
論文名稱(外文):Global Ion Density Distributions Observed by Advanced Ionospheric Probe Onboard FORMOSAT-5 Satellite
指導教授:趙吉光
學位類別:碩士
校院名稱:國立中央大學
系所名稱:太空科學研究所
學門:自然科學學門
學類:天文及太空科學學類
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:115
中文關鍵詞:先進電離層探測儀福爾摩沙衛星五號太空電漿
外文關鍵詞:Advanced Ionospheric ProbeFORMOSAT-5Space Plasma
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福爾摩沙衛星五號(福衛五號,FORMOSAT-5)於台灣時間2017 年8 月25 日發射,運行於高度約720 公里與軌道傾角98.28 度的太陽同步軌道(繞極軌道)上,經過赤道的當地時間約為10:30 與22:30,以每兩日的飛行週期便可涵蓋全球。福衛五號搭載的科學酬載為先進電離層探測儀(Advanced Ionospheric Probe, AIP),其由中央大學研發團隊設計開發完成,以量測電離層的電漿特性。AIP 自2017/11 以來於夜側對電離層進行實地量測,其所觀測到的離子密度可建構電離層的全球離子密度分布。歷經兩年半(2017/11~2020/4)的全球離子密度分布顯示,可明確地看到赤道地區電漿密度結構(Four-peak or Three-peak Plasma Density Structure)與中緯度電漿密度帶(Mid-latitude Plasma Density Band or Enhancement)隨經度與季節而變化,佐證AIP 可準確地長期探測電離層並提供良好品質的離子密度資料。
A FORMOSAT-5 satellite has been launched on 25 August 2017 CST into a 98.28°
inclination sun-synchronous orbit at 720 km altitude along the 10:30/22:30 local time sectors.
The orbital coverage provides a great opportunity to survey terrestrial ionosphere from equatorial to polar region every two days. Advanced Ionospheric Probe (AIP) is a piggyback science payload developed by National Central University for the FORMOSAT-5 satellite to in-situ measure ionospheric plasma characteristics. The global ion density distributions observed by FORMOSAT-5/AIP in the pre-midnight sector are available since November 2017. Through the seasonal global ion density distributions from November 2017 to April 2020, longitudinal and seasonal variations of four-peak (or three-peak) plasma density structure near equator and mid-latitude plasma density bands (or enhancements) are clearly observed. It is indicated that FORMOSAT-5/AIP can provide high quality data to identify long-term ionospheric ion density variations
中文摘要……………………………………………………………………………………...……i
英文摘要…………………………………………………………………………….….................ii
誌謝……………………………………………………………………………………………….iii
目錄…………………………………………………………………………………………….....iv
圖目錄................. ………………………………………………….……………………………..vi
第一章 簡介................................................................................................................................. 1
1.1 電離層…………………………………………………………..……………………….2
1.2 福爾摩沙衛星五號.......................................................................................................... 4
1.3 先進電離層探測儀.......................................................................................................... 6
1.4 科學任務 …………………………………………………………..……………………8
1.4.1 赤道地區電漿密度結構........................................................................................... 8
1.4.2 中緯度電漿密度帶................................................................................................... 9
1.4.3 小結………………………………………………………………………………..10
第二章 科學資料處理................................................................................................................ 11
2.1 原始觀測資料之取得..................................................................................................... 11
2.2 可讀的科學資料之取得................................................................................................. 11
2.3 可用的科學資料之篩選................................................................................................. 11
2.3.1 攻角考量.................................................................................................................. 11
2.3.2 電漿參數考量.......................................................................................................... 11
2.3.3 地磁擾動考量......................................................................................................... 12
2.4 平均離子密度之取得.................................................................................................... 12
v
2.4.1 經緯網格解析度..................................................................................................... 12
2.4.2 計算離子密度平均值............................................................................................. 12
2.5 電離層的全球離子密度分布之繪製............................................................................ 12
第三章 觀測結果與討論........................................................................................................... 13
3.1 電離層的全球離子密度分布........................................................................................ 13
3.1.1 春季與秋季………………..……………………………………………………....14
3.1.1.0 季節分布:2018~2020年春季與秋季…………..…..……..…..…….……14
3.1.1.1 2018~2020年春季的月分布:3月與4月………………………………….20
3.1.1.2 2018~2019年秋季的月分布:9月與10月………………………………...26
3.1.1.3 2018~2020年春季半月平均分布:3月至4月…………………………….30
3.1.1.4 2018~2019年秋季半月平均分布:9月至10月…………………………...38
3.1.2 冬季與夏季…………………………..……………………..…..………………....44
3.1.2.0 季節分布:2017~2019年冬季與夏季……………………..………...........44
3.1.2.1 2017~2019年冬季的月分布:11月、12月、翌年1月、翌年2月…..…...50
3.1.2.2. 2018~2019年夏季的月分布:5月、6月、7月以及8月……………..…...59
3.2 討論…………………………..…………………………………………...…………....64
第四章 結論............................................................................................................................... 65
參考文獻....................................................................................................................................... 66
附錄一、利用MATLAB®進行平行運算及其運算結果 ............................................................ 69
附錄二、全球離子漂移速度分布圖........................................................................................... 87
附錄三、利用福衛五號軌道資訊進行STK模擬之流程圖……………………………………98
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