空中防撞系統已經發展多時，尤其在大型客機上的機載系統以及避讓邏輯皆趨近成熟。美國近年提倡小型運輸系統，利用普通航空器讓小區域的飛行更加便利。但隨著空域密度的提高，空中碰撞的機率亦相對提升，一套適用於普通航空器的避讓演算邏輯並配合目前技術的發展，來增進飛行安全是必須的。此研究主要探討水平避讓的模型，利用廣播式自動回報監視(ADS-B)技術，為新一代航空運輸系統(NextGen)概念下建構最短的解決碰撞距離來決定要向左或向右避讓。

The National Airspace System (NAS) will change dramatically over the next 20 years. The demand of the airspace will increase rapidly, especially the usage of general aviation (GA), while the Small Aircraft Transport System (SATS) provides alternatives in air travel. As a result, collision avoidance system will play an important role for the aviation safety in the future. Varieties of conflict detection and resolution (CD&R) were published under two and three maneuvering dimensions. The demand of airspace increases, the probability of mid-air conflict also rises. This study focuses on efficient collision avoidance logic for GA based on ADS-B for NextGen. Heading change of horizontal resolution is more suitable for small GA flying in lower altitude in this thesis. Simulations using real flight data are tested to verify the effectiveness of the proposed algorithm.

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