本論文利用嵌入式系統實現GPS干擾之抑制並進行分析與探討。由於環境中充滿了許多干擾與雜訊，使得GPS訊號傳送至GPS接收器時，GPS訊號相較於雜訊已相當微弱，無法精確對其擷取與追蹤，達到定位之要求。鑒於陣列天線所形成訊號的空間方向特性，所以可利用調整天線指向性來加強訊號同時消除。並且隨著電子技術的快速發展，使得電子系統小型化、微型化進程加快，幾乎所有電子系統都可以整合在一塊晶片上。所以，本系統結構為利用Altera嵌入式系統可規劃的彈性與迅速的處理速度，作為結合陣列天線與RF front end接收GPS訊號的平台，將實際所接收訊號配合適應性的演算法，調整波束合成以達到增強GPS訊號強度及抑制雜訊目的探討。

The Global Navigation Satellite System (GNSS) signals transmit to the receiver is quite weak. Due to the fact that the signal have been mixed with interference and noise, this weak signal cannot be used to track the trajectories precisely. In accordance with the characteristics of spatial direction of the signal, the result of beampattern of the antenna array can be adjusted by an adaptive algorithm to enhance the GPS signal and to process interference mitigation simultaneously. As the rapid development of electronic technologies, the adaptive algorithm can be implemented on a programmable logic device. Hence, this thesis utilizes an embedded system to achieve the GPS interference mitigation. The main architecture combines with antenna array and RF front end as the platform for the reception of GPS signals. In order to mitigate the interference on the GPS signal, a spatial-temporal adaptive processing algorithm (STAP) is implemented on the embedded system, DSP development kit Stratix II.

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