目前全球衛星導航系統除了美國的GPS以外，歐盟的「伽利略」(Galileo) 和中國的「北斗」 (Beidou) 也在建置當中。伽利略系統現在擁有4顆IOV衛星並預計在2019年完成布建30顆衛星的系統。而北斗系統發展更是快速，現在擁有超過15顆衛星提供服務並預計在2020年前進入北斗全球導航階段。因此，我們可以預計在不久的將來，各個系統都會越來越完整且提供使用者各項服務世界上不同的區域也會有其最適當的衛星系統。有鑑於此，接收機所能接收的衛星系統當然是愈多越好。本論文旨在實現一個衛星接收機可以同時接收GPS、Galileo、Beidou衛星系統在L1頻帶內的訊號，並對其做訊號處理。本接收機設計了8個追蹤通道，可以讓使用者自由分配追蹤通道給GPS、Galileo、Beidou衛星系統，並同時達到穩定的追蹤。這項自由分配通道的彈性讓接收機可以適應不同的狀況，並提供良好的發展平台給後續多衛星系統的整合應用。論文中介紹接收機的整體架構以及硬體、軟體實現的詳細說明，並接收衛星訊號來做測試和驗證結果。

Nowadays, of all Global Navigation Satellite Systems (GNSS) besides GPS, European Union’s Galileo and China’s Beidou are under construction. Galileo system now has four IOV satellites and plans to construct a system with 30 satellites in 2019. Beidou system is developing even faster and now has more than 15 satellites providing services, and plans to become a global navigation satellite system before 2020. Therefore, we can expect in the near future that every system will become more and more completed and provide users many kinds of services. Furthermore, different areas in the world have their most suitable satellite system. For this reason, it is desired for the receiver to receive more satellite systems. This thesis presents an implementation of a receiver that can receive GPS, Galileo, Beidou signals in the L1 band and process the signals. This receiver is designed to have 8 tracking channels that can be allocated to GPS, Galileo, Beidou systems at will and achieve stable tracking simultaneously. This flexibility of random channel allocation allows the receiver to adjust to different situations and provide good development platform for the following applications of multi-constellation integrity. This thesis describes the overall receiver architecture, the detailed implementation in hardware and software, and test results using real satellite signals.

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