赤道異常區三維電離層之斷層掃描模擬研究

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：28

、訪客IP：18.224.55.193

姓名

葉怡君(Yi-Jing Ye ) 查詢紙本館藏

畢業系所

太空科學研究所

論文名稱

赤道異常區三維電離層之斷層掃描模擬研究

相關論文

★ 中速震波穩定性之模擬研究	★ 中速震波生成之模擬研究
★ 三維電離層斷層掃描之模擬研究	★ 應用電離層斷層掃描研究颱風對電離層之影響
★ 迴旋動力碼之建立與應用	★ 粒子碼與迴旋動力碼之模擬結果比較
★ 電離層斷層掃描新方法之研究	★ 應用改良式二次規劃法作電離層電腦斷層掃描影像重建之研究
★ 太陽風中旋轉不連續面及非線性艾爾文波之數值模擬研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

本篇論文為考慮地球曲率之三維電離層斷層掃描在赤道異常區的模擬研究。實驗採用IRI-90 電離層模型，作為模擬時的原始資料。日期選取10月19日， LT0600、LT1200、LT1800及LT2400四個時段，重建區域為高度125?1000Km；北緯 0°?50°；東經116°?124°，共分為36×101×9個網格。地面接收站設置以每一個經度一個為原則，平均分佈於緯度上，共設置九個地面接收站。
首先模擬衛星飛行的軌道，並經由模擬計算出每個地面接收站所接收到每次事件的相位移資料，以此為原始資料反演出IRI-90 model電離層的結構。首先將九站之相對斜向全電子含量投影到衛星飛行軌道面，使用兩站法求得重建積分常數值。利用back-projection method將重建絕對斜向全電子含量平均分配到射線所通過的網格點。以alpha Chapman layer做垂直方向的分配。由MART演算法得到迭代後之重建電子濃度在三維空間（R，θ，ψ）之分佈。
由於接收站皆不共面造成重建積分常數誤差大，位於赤道異常區之接收站的誤差最大。接收站的數量、衛星軌道與重建區域之相對關係、外插的方法、初始資料的設定、先驗資訊的缺乏‧‧‧等等，都造成重建電子濃度的誤差。

摘要(英)

The main of this paper is a simulation of three-dimensional (3-D) computerized ionospheric tomography (CIT), which is consider of the earth curvature, in the equatorial anomaly characteristics (EAC) region. We applied IRI-90 model as initial electron density distribution of ionosphere, and choose the date October 19, in the time of LT 0600, LT1800, LT1200, and LT2400. The reconstructed region is over a altitude range of 125 to 1000 km, a latitude range of 0° to 50° N, and a longitude range of 116° to 124° E. There are 36×101×9 pixels. Choose nine ground stations separated at different longitude and equally separated at latitude.
The process is started from the simulation of satellite’s trajectories, and we determine the data of Doppler’s phase shift for every receiver station. These are original data of this study, then, we make a projection of the relative STEC to the plane of satellite’s trajectories, and use the two stations method to obtain the reconstructed integer constants. Horizontal distribution is using back projection method. Vertical distribution is using alpha Chapman layer. Then use MART algorithm to reconstruct the 3-D images in the sphere coordinate of ionospheric electron density.
The max error is happened in the receiver, which is in the EAC region. The error is come from the number of receiver, the geometry relationship between the satellite and reconstruct region, the interpolation method, the initial data, the lack of prior information, and so on.

關鍵字(中)

★ 3-D
★ 斷層掃描
★ 赤道異常區
★ 電離層

關鍵字(英)

論文目次

中文摘要‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Ⅰ
英文摘要‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Ⅱ
誌謝‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Ⅲ
圖表目錄‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ Ⅵ
第一章：緒論‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 1
1-1斷層掃描‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 2
1-2電離層電腦斷層掃描‧‧‧‧‧‧‧‧‧ 5
第二章：簡介‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 7
1-1電離層‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 7
2-2電離層赤道異常現象‧‧‧‧‧‧‧‧‧ 9
2-3全電子含量‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 11
第三章：理論基礎‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 14
3-1折射係數‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 16
3-2差分都卜勒技術‧‧‧‧‧‧‧‧‧‧‧‧‧ 18
3-3積分常數‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 21
3-4 MART演算法‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 25
3-5初始值‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 27
第四章：實驗之方法及步驟‧‧‧‧‧‧‧‧‧‧‧‧‧ 30
4-1IRI-90 model‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 30
4-2地面接收站與衛星軌道設定‧‧‧ 30
4-3求射線線段長度‧‧‧‧‧‧‧‧‧‧‧‧‧ 30
4-4求取積分常數值‧‧‧‧‧‧‧‧‧‧‧‧‧ 33
4-5初始值的設定‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 33
第五章：模擬結果‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 36
5-1原始實際資料‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 36
5-2相位模擬‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 37
5-3影像重建‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 48
第六章：討論及結論‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 73
6-1討論‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 73
6-2結論‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 78
參考文獻‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧‧ 79

參考文獻

Anderson, D. N., D. T. Decker, and C. E. Valladares, "Global Theoretical Ionospheric Model (GTIM)," Solar-Terrestrial energy program: Handbook of Ionospheric models, edited by R. W. Schunk, SCOSTEP, 1996.
Appleton E. V., "The anomalous equatorial belt in the F-layer," J. Atoms. Terr. Phys. 5, 349, 1954.
Austen, J. R., S. J. Franke, and C. H. Liu, "Ionospheric imaging using computerized tomography," Radio Science, vol. 23, no. 3, pp. 299-307, 1988.
Bracewell, R. N., "Strip integration in radio astronomy," Aust. J. Phys., vol. 9, pp. 198-217, 1956.
Crane, R. P., "Refraction effects in the neutral atmosphere," in Methods of experimental physics, vol. 12B: Radio Telescopes, ed. M. L. Meekes, Academic Press, New York, 1976.
Davies, K., 'Ionospheric radio,' vol. 31 of IEE Electromagnetic Waves Series, Peter Peregrinus Ltd., London, United Kingdom, 1989.
Fehmers, G. C., 'Tomography of the ionosphere,' Ph.D. thesis of Physics Department of the Eindhoven University of Technology. 1996.
Huang, C. R., C. H. Liu., H. C. Yeh., W. H. Tsai., C. J. Wang., K. C. Yeh., K. H. Lin, and H. L. Tsai, "IRI model application in low latitude ionospheric tomography,” Adv. Space Res. Vol. 18(6), pp. 237-240, 1996.
Huang, C. R., C. H. Liu., H. C. Yeh, and W. H. Tsai, "The Low-latitude Ionospheric Tomography Network(LITN)----Initial Results," J. Atmos. Terr. Phys., Vol. 59, No. 13, pp 1553-1567, 1997.
Kak, A. C. and M. Slaney. 'Principles of Computerized Tomographic Imaging,' IEEE press, New York, 1988.
Kelley, M. C. 'The Earth's Ionosphere,' Academic Press, 1989.
Leitinger, R., G. Schmidt and A. Tauriainen, "An evaluation method combining the differential Doppler measurements from two stations that enables the calculation of the electron content of the ionosphere," Journal of Geophysics, 41, 201-213, 1975.
Leitinger, R., G. K. Hartmann, F. J. Lohmar, and E. Putz, "Electron content measurements with geodetic Doppler receivers," Radio Sci., 19(3), 789-797, 1984.
Martyn, D. F., "Electric currents in the ionosphere. III. Ionization drift due to winds and electric fields," Phil. Trans. Roy. Soc. London, A246, P. 306, 1953.
Radon, J. "Uber die Bestimmung von Funktionen durch ihre Integralwerte langs gewisser Mannigfaltigkeiten (On the determination of function from their integrals along certain manifolds)," Berichte Sachsische Akademine der Wissenschaften. Leipzing, Math. --- Phys. Kl., 69, pp. 262-267. 1917.
Raymund, T. D., J. R. Austen, S. J. Franke, C. H. Liu, J. A. Klobuchar and J. Stalker, "Application of computerized tomography to investigation of ionospheric structures," Radio Sci., vol. 25, pp. 771-789. 1990.
Raymund, T. D., and K. C. Yeh “Limitations of ionosphere imaging by tomography,” Radio Sci., vol. 26, pp.1361-1380. 1991.
Raymund, T. D., "Ionospheric tomography algorithms," International Journal of imaging Systems and Technology, 5, 75-85, 1994.
Villard, D. G., "The ionospheric sounder and its place in the history of radio science", Radio Sci., vol. 11, p. 847, 1976.
蔡宏利, '沿台灣經度低緯電離層電腦斷層掃描的研究,' 中山大學碩士論文, 1995.
王承就, '沿台灣經度低緯電離層電腦斷層資料反演之研究,' 中央大學碩士論文, 1996.
黃啟瑞, '發展與應用電腦斷層掃描技術以研究赤道異常區之電離層,'中央大學電機工程研究所博士論文, 1997.
董志聖, “三維電離層斷層掃描之模擬研究,” 中央大學碩士論文, 2000.
凱維勒斯著, 楊玉齡譯 “露骨-醫學造影檔案,” 天下文化, 2000.

指導教授

蔡偉雄(Wei-Hsiung Tsai)

審核日期

2001-7-10

推文