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研究生:何家輝
研究生(外文):Ka-Fai Ho
論文名稱:以動態法計算CHAMP衛星短弧軌道
論文名稱(外文):CHAMP Satellite Short-arc Orbit Determination using Kinematic Method
指導教授:楊名楊名引用關係
指導教授(外文):Ming Yang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:測量工程學系碩博士班
學門:工程學門
學類:測量工程學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:75
中文關鍵詞:動態法短弧軌道
外文關鍵詞:short-arc orbitkinematicCHAMPsatellite
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近幾年來,發展地球低軌衛星進行各項地球科學研究任務成為一項趨勢,例如CHAMP衛星、與中華三號衛星(ROCSAT-3)等,前者已於2000年成功發射升空,ROCSAT-3亦預計於2005年發射並執行其科學研究。低軌衛星的科學任務包括提昇地球重力場模式精度、探測大氣濕度與壓力變化、氣象預報與地磁時空變化等研究,為了讓上述各科學研究能順利進行,低軌衛星之軌道資訊是必要且重要的研究課題之一。
本研究利用CHAMP衛星上裝載之GPS接收器所接收之雙頻觀測量與地面上40個IGS追蹤站組成三次差分無電離層觀測量,並改正觀測量中之對流層誤差、固體潮誤差、質量中心改正、地球自轉、天線相位中心偏差等誤差量,以純幾何之動態法求定低軌衛星之短弧軌道位置。研究結果顯示短弧軌道在radial、along-track、cross-track三分量上的平均RMS值為20、20與15公分,平均3D RMS為32公分;重複軌道之三軸分量平均RMS值分別為25、17與13公分,平均3D RMS為32公分。
In recently years, there is a tendency to develop low-earth orbit(LEO)satellites, as the CAHMP lunched at 2000 and ROCSAT-3 will lunch at 2005, to process many earth sciences researches. The science projects of the LEO include earth gravity recovery, earth atmosphere temperature and pressure retrieval, weather prediction and space/time variability of the magnetic field of the earth. Determine the LEO position is one of the important and necessary task in order to carry out those researches above.
This research process the ionosphere-free triple-differenced carrier phase observation which consist of double frequency GPS observations from the GPS receiver carried on the CHAMP and 40 IGS tracking stations. Besides, the tropospheric correction model, solid earth tide correction, mass center correction of the satellite, earth rotation correction and antenna phase center correction are incorporated. Finally, determine the satellite short-arc orbit with the pure geometry, kinematic, method. The results show that the average RMS of the short-arc orbit at radial、along-track、cross-track components are 20、20 and 15 cm, and the average 3D RMS is 32 cm. The average RMS of the overlap orbit at three components are 25、17 and 13 cm and the average 3D RMS is 32 cm.
中文摘要..............................................Ⅰ
英文摘要..................................................Ⅱ
致謝......................................................Ⅲ
目錄......................................................Ⅳ
表目錄....................................................Ⅵ
圖目錄....................................................Ⅶ
第一章 緒論...............................................1
§1-1 前言................................................1
§1-2 文獻回顧............................................2
§1-3 研究動機與方法......................................3
第二章 CHAMP衛星與全球定位系統............................5
§2-1 CHAMP衛星...........................................5
§2-2 全球定位系統........................................7
§2-2-1 GPS定位原理.....................................7
§2-2-2 GPS衛星星曆.....................................8
§2-3 GPS觀測量...........................................9
§2-3-1 虛擬距離觀測量......................................9
§2-3-2 載波相位觀測量.....................................10
§2-3-3 GPS觀測量之差分方程式..............................11
第三章 CHAMP衛星與地面追踨站資料之計算及改正模式.........15
§3-1 觀測方程式.........................................15
§3-2 對流層改正模式.....................................18
§3-3 固體潮改正模式.....................................19
§3-3-1 平衡潮與固體潮.................................19
§3-3-2 固體潮改正量計算...............................21
§3-3-3 太陽與月球位置的計算...........................23
§3-4 質量中心改正.........................................26
§3-5 天線相位中心改正及地球旋轉改正.......................32
 §3-5-1 天線相位中心改正.................................32
 §3-5-2 地球旋轉改正.....................................33
§3-6 坐標轉換.............................................33
第四章 實驗與成果分析....................................36
§4-1 資枓來源.............................................36
§4-2 實驗流程...........................................39
§4-3 觀測量之評估.........................................41
§4-4 成果分析.............................................44
第五章 結論與建議........................................71
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