全球定位系統(global positioning system, GPS)能提供全球準確的定位、測速和高精度的時間標準。然而，在民航上的應用上，單獨使用GPS導航定位不能達到民航的導航性能需求(required navigation performance, RNP)進行進場及降落。國際民用航空組織(international civil aviation organization, ICAO)提出利用陸基增強系統(ground based augmentation system, GBAS)增強GPS的完整性(integrity)達到第一類(category I, CAT I)進場的導航服務能力。由於台灣目前並沒有GBAS建置系統，為了評估GBAS在台北飛航情報區(Taipei flight information region, Taipei FIR)運行的效能。為了未來能在台灣建置與評估GBAS，本論文發展與評估即時處理的GBAS地面設施原型，完整性監測平台(integrity monitor test-bed, IMT)。然而，台灣立處於中低緯度地區，電離層的異常變化十分頻繁，而這些將會導致GBAS在運行上的錯誤，為了能夠讓GBAS使用者能夠避免電離層劇烈變化造成的異常，本論文提出多個電離層監測機制，當偵測出電離層異常時，能夠對使用者提出警告，讓使用者能夠避免電離層異常造成的影響。本論文再經由分析各個電離層異常監測機制的優點與其限制，發展出一套電離層異常整合監測系統結合各個機制的優點。為了評估整合系統的電離層異常監測效能，本論文將會模擬不同嚴重程度的電離層異常模型並分析對於整合系統的影響程度，並使用實際接收的GPS資料驗證各個電離層異常監測機制與其整合系統的效能。最後，本論文所呈現的結果將可以提供在未來建置陸基增強系統(GBAS)於台北飛航情報區(Taipei FIR)的重要參考依據。

Global positioning system (GPS) can provide the position, velocity and time (PVT) information for almost anywhere on Earth. However, stand-alone GPS cannot meet the real-time integrity monitoring capability necessary to meet the civil aviation navigation safety requirements. That is, stand-alone GPS cannot meet the required navigation performance (RNP) for civil aviation approaches and landings. In order to improve GPS performance and enhance its integrity, the ground-based augmentation system (GBAS) is recommended by the international civil aviation organization (ICAO) as a solution to augment GPS for category I (CAT I) approaches and landings. In order to improve the navigation service performance in the Taipei flight information region (FIR), the Taiwan civil aeronautics administration (CAA) plans to implement a GBAS in the Taipei FIR. In order to validate the GBAS design in Taiwan, in this thesis, we evaluate the real-time operation of the GBAS ground facility prototype, the integrity monitor test-bed (IMT). After the designs of the real-time GBAS ground facility prototype and the associated user platform are validated, the developed system is used as a test bed for assessing ionospheric anomalies. Since Taiwan is located in a middle and low-latitude region, anomalies due to the ionosphere are the major concern for GBAS implementation and operation. In order to help GBAS users avoid anomalies due to the ionosphere, we propose several detection methods to monitor such anomalies. Also, we need an integrated detection method to combine the advantages of each detection method. After that, if the system detects an anomaly, it will alert the GBAS users in order to avoid any negative consequences. In this thesis, we simulate different severities of the ionospheric anomaly model and analyze each corresponding effect for the detection methods that we establish. Also, we collected the real GPS data to validate the proposed integrated detection method. Finally, it was concluded that we can improve the integrity and safety of civil aviation with the GBAS in Taiwan during an ionospheric anomaly.

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