| 研究生: |
許滙捷 Hsu, Hui-Chieh |
|---|---|
| 論文名稱: |
區域性全球定位系統完整性監測系統之實現 Implementation of a Local Area Integrity Monitoring for GPS |
| 指導教授: |
詹劭勳
Jan, Shau-Shiun |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 民航研究所 Institute of Civil Aviation |
| 論文出版年: | 2011 |
| 畢業學年度: | 99 |
| 語文別: | 中文 |
| 論文頁數: | 66 |
| 中文關鍵詞: | 全球定位系統 、陸基增強系統 、完整性監控 |
| 外文關鍵詞: | GPS, Ground Based Augmentation System, Integrity Monitoring |
| 相關次數: | 點閱:98 下載:6 |
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為了滿足第一類(CAT I)精確進場所需之準確性,完整性,連續性和可用性等導航性能(RNP),使用陸基增強系統(GBAS)是提高全球導航衛星系統(GNSS)性能的解決方式。本論文實現了GBAS地面設施之演算法原型機,也就是完整性監控測試平台(IMT)。在此論文中將使用三個 IMT參考站收集全球定位系統(GPS)之訊號,並將 GPS觀測量儲存後送至 IMT主站進行完整性監測的流程。在IMT主站中包含三個品質監測機制(QM)之演算法,即衛星訊號品質監測機制(SQM)、衛星星曆品質監測機制(DQM)以及衛星觀測量品質監測機制(MQM),目的在於監測任何GPS訊號品質上的錯誤。本文將利用高斯overbounding之方法計算監測機制所需之門檻值做為檢測標準。經過這些品質監測機制之檢測後,邏輯判斷機制(EXM)將排除錯誤之GPS觀測量,並且使用確保後之GPS觀測量計算修正量。邏輯判斷機制中包含了參考站一致性檢查(MRCC)、標準差平均檢驗和修正量範圍檢測(MFRT),皆用以確保在傳送修正量與使用者前之最後檢測。因此,本論文中將就IMT之軟硬體設計進行詳細介紹,並且呈現此系統於分析和驗證上之結果。
關鍵字:全球定位系統、陸基增強系統、完整性監控
For meeting the Required Navigation Performance (RNP) of CAT I (Category I) precision approaches on accuracy, integrity, continuity, and availability, the use of the Ground Based Augmentation System (GBAS) is a solution for enhancing the performance of Global Navigation Satellite Systems (GNSS). This thesis implements the Integrity Monitoring Test-bed (IMT) algorithms that is a prototype of the GBAS ground facility. In this thesis, three IMT reference stations are used to collect GPS measurements, and then these GPS measurements are sent to the IMT master station for integrity processes. In the IMT master station; three Quality Monitoring (QM) algorithms, namely the Signal Quality Monitoring (SQM), the Data Quality Monitoring (DQM), and the Measurement Quality Monitoring (MQM), are employed for various detections of failures in the measurements. This thesis utilizes the Gaussian overbounding method to determine the thresholds and the detection criteria that are used in these QM algorithms. After these QM processes, the measurements with flags are excluded by the Executive Monitoring (EXM), and the EXM then uses the remaining measurements to compute the corrections. The EXM runs the Multiple Reference Consistency Check (MRCC), the Sigma-Mean monitoring, and Message Field Range Test (MFRT) to ensure the qualities of the computed corrections before broadcasting them. Accordingly, the hardware and software designs of this IMT are detailed in this thesis, and the analyses and validation tests of this IMT are presented as well.
Keyword:GPS, Ground Based Augmentation System, Integrity Monitoring
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