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研究生:張茂欽
研究生(外文):Mao-Qin Zhang
論文名稱:提升空載GPS網形動態解算精度之研究
論文名稱(外文):Improving the accuracy of airborne GPS network kinematic positioning
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:測量及空間資訊學系碩博士班
學門:自然科學學門
學類:地球科學學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:91
中文關鍵詞:網形動態定位空載GPS
外文關鍵詞:Airborne GPSNetworkKinematic Positioning
相關次數:
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  • 下載下載:28
  • 收藏至我的研究室書目清單書目收藏:0
GPS定位技術日趨成熟,而對於快速且高精度技術的需求也日增。空載重力測量或是空載Lidar等等運用空載GPS進行定位的測量方式,也必須依賴GPS的定位精度,由於GPS測量本來就受到許多誤差來源的因素,再加上空載動態的GPS因為飛機的快速移動,導致定位精度相較於靜態GPS測量的成果精度較為不佳,因此必須找出一套方法,用以提升空載GPS的精度。本研究藉由靜態模擬動態解與空載GPS的動態解算成果比較與分析,發現空載GPS由於快速移動導致接收到的GPS資訊中通常會有許多資料不連續的斷訊現象,此現象在本研究所使用的解算軟體-Bernese5.0仍可以解算出該時段週波解,但是因為資料狀況不佳,導致解算的週波解並不穩定,因此必須在軟體解算前試以一個預處理的方式,將資料中資料不連續的斷訊現象加以消除,便能獲得較佳的成果精度;本研究使用資料為內政部93年度所辦理的「空載重力測量工作」GPS資料,挑選9天之GPS資料作計算分析;整體而言,在未經過預處理的空載GPS動態解的重疊精度RMS值:平面約10公分,高程約26公分,相對的經過預處理後的空載GPS動態解的重疊精度:平面約10公分,高程約17公分;在此實驗中預處理對於空載GPS的成果精度在高程約可提升35%左右。
The Global Positioning System becomes more and more mature. The need for fast and high-accuracy technology such as airborne gravimetry or LIDAR and so on, whose surveying depends on GPS accuracy increases day by day. We have to develop a method to increase GPS accuracy so that we can overcome the shortcomings that there are many error resources and the accuracy of airborne kinematic GPS is worse than airborne static GPS because of the fast movement of the flight. This research compares and analyzes two different GPS resolutions that one is kinematic solution of static GPS and the other is kinematic solution of airborne GPS. After the comparing and analyzing, we found a phenomenon that there are many discontinuous signals which existed in what we received from GPS. And this is because of the rapid movement of the flight. Although we can solve the ambiguity in this interval by Bernese5.0 the ambiguity is unstable because of the discontinuous signals. In order to get better results, we have to pre-process the signals before solving the ambiguity by Bernese5.0 so that we can remove the phenomenon that the signals are discontinuous. We chose nine days GPS data from “The work of airborne gravimetry” proceeded by Ministry of Interior in the 93rd year to analyze. On the whole, the accuracy of kinematic solution of airborne GPS before pre-processing is about 10cm in plane and 26cm in height and that after per-processing is about 10cm in plane and 17cm in height. The accuracy can be improved about 35% in height after pre-processing.
摘 要 I
Abstract II
誌謝 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 研究動機與目的 2
§ 1-3 研究背景與文獻回顧 2
§ 1-4 研究方法 4
第二章 GPS動態定位 7
§ 2-1 GPS定位原理 7
§ 2-1-1 虛擬距離觀測量 8
§ 2-1-2 載波相位觀測量 10
§ 2-2 載波觀測量線性組合 11
§ 2-2-1 差分定位線性組合 11
§ 2-2-2 雙頻載波線性組合 15
§ 2-3 GPS定位方法 16
§ 2-3-1 各種定位方法 16
§ 2-3-2 動態定位方法 18
§ 2-3-2-1 即時動態定位 19
§ 2-3-2-2 後處理動態定位 20
§ 2-4 空載動態網形定位誤差來源 22
§ 2-4-1 一般GPS定位誤差來源 23
§ 2-4-2 動態定位附加誤差來源 25
第三章 動態定位資料改善方法 27
§ 3-1 Bernese5.0解算流程 27
§ 3-2 Bernese改善動態定位之方法 33
§ 3-2-1 改善一般GPS測量誤差 33
§ 3-2-2 改善動態GPS測量誤差 34
§ 3-3 預處理改善動態定位之方法 36
§ 3-4 本研究之空載GPS解算流程 40
第四章 實驗與成果分析 43
§ 4-1 實驗資料 43
§ 4-2 靜態與動態資料品質比較 44
§ 4-3 實驗方法與流程 46
§ 4-4 靜態資料與動態資料計算成果分析比較 48
§ 4-4-1 靜態模擬動態解算 48
§ 4-4-2 空載GPS動態解算 50
§ 4-5 資料預處理與計算成果分析 55
§ 4-6 預處理前後資料特性 62
第五章 結論與建議 66
參考文獻 68
附錄一:資料預處理程式 72
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