GPS在全世界有許多導航定位的應用，本論文著重於民航導航服務。然而，單獨使用GPS導航定位，並無法達到民航的導航性能需求 (required navigation performance, RNP)，特別是在民航機降落的階段。陸基擴增系統(ground based augmentation system, GBAS)是對於區域性導航，尤其在機場附近，是很好的解決辦法。GBAS提供了第一類 (Category I, CAT I) 進場的導航服務能力，也能夠支援曲線進場。由於台灣目前並沒有GBAS系統的建置，為了評估GBAS系統的效能，必須發展一套完整的GBAS演算法，若以架設實驗儀器於各機場的方式，將耗費相當多的人力與經費。因此，本論文研究著重於開發一可用性分析工具用以模擬GBAS地面設備 (ground facility) 演算法的原型，稱作完整性監視測試平台 (integrity monitoring test-bed, IMT)。此IMT模擬工具包含了IMT演算法及一使用者圖形介面 (graphical user interface, GUI) 方便讓使用者修改所需要的參數。另外，此IMT模擬工具所提供的結果為Stanford Chart，Stanford Chart是一個很好的可用性分析圖表，透過使用者定位的結果以及保護極限 (protection level, PL) 的計算，使用者能夠從Stanford Chart中可以得知模擬的結果是否滿足CAT I的要求。此外，IMT模擬工具是藉由Qt開發，Qt是一個開放源且跨平台的工具，使用Qt開發此IMT模擬工具，能夠使IMT模擬工具在不同的系統及平台上執行。在本論文中，多個位於不同飛航情報區的機場會被用來模擬及評估其效能。本論文所呈現的結果將可以提供未來建置GBAS於台北飛航情報區的參考依據。

Global positioning system (GPS) has been used for positioning, navigation and time applications. However, in the field of civil aviation, standalone GPS cannot meet the required navigation performance (RNP) for aircraft approaches and landings. In order to solve this problem, the international civil aviation organization (ICAO) recommends ground-based augmentation system (GBASs) as a solution to augment GPS for category I (CAT I) approaches and landings. GBAS also support complex approach procedures. While the Taipei flight information region (FIR) lacks GBAS services, it will require a lot of effort to assess its navigation service performance under various system configurations. This effort will also require many administrative procedures for assessment of the project and will also require a great deal of labor. To reduce these related costs, in this thesis, an availability analysis tool is developed to simulate the GBAS prototype as an integrity monitoring test-bed (IMT) at the airport of interest. This IMT simulation tool includes an IMT algorithm and a graphical user interface (GUI), which is also developed to allow the users to modify parameters. The output of the simulation tool is a Stanford Chart, which indicates the availability for user protection level versus various RNP levels. This simulation tool is developed on Qt (http://qt.digia.com/), an open-source cross-platform software, allowing the tool to run on various devices and operation systems. Several airports in different FIRs are used to evaluate the performance. The results of this thesis can serve as a reference for future GBAS implementation in the Taipei FIR.

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