發(fā)布時間：2018-10-22 09:41

【摘要】：隨著民用化的普及，衛(wèi)星導航系統(tǒng)越來越深入到人們的生活。無論在汽車導航、交通管理還是在國防安全領域，衛(wèi)星導航系統(tǒng)的影響越來越廣泛。同時由于嵌入式技術的發(fā)展，手持衛(wèi)星導航終端也成為衛(wèi)星導航領域的開發(fā)熱點。 鑒于導航終端對處理速度要求較高，并且要求操作簡單，本課題選擇以S3C2440為處理器，Linux為嵌入式操作系統(tǒng)的開發(fā)平臺，設計了基于北斗系統(tǒng)的衛(wèi)星定位終端設備。論文首先對嵌入式開發(fā)的相關理論以及衛(wèi)星導航定位的基本原理進行了詳細的介紹，并對NEMA-0183的協(xié)議內(nèi)容進行了說明。其次，根據(jù)導航系統(tǒng)的實際需求，選擇了合適的系統(tǒng)硬件模塊，并對各模塊進行了詳細的介紹，整個系統(tǒng)由基于S3C2440的控制模塊、北斗UM220模塊和無線傳輸模塊GTM900-C組成。在軟件方面，搭建了嵌入式Linux的開發(fā)環(huán)境，包括BootLoader的移植、Linux內(nèi)核的移植、文件系統(tǒng)的構建、Qt的移植等內(nèi)容，并且對觸摸屏驅(qū)動的移植過程進行了詳細的研究；隨后重點設計了系統(tǒng)的應用程序，包括Linux下串口通信、衛(wèi)星定位模塊、無線傳輸模塊以及嵌入式電子地圖的設計，尤其深入分析了MapInfo電子地圖，構建了基于SQLite的電子地圖數(shù)據(jù)庫，用于存放地圖的詳細信息。 通過最終的實驗測試，，系統(tǒng)能夠較好地完成定位功能，并能夠通過GPRS/GSM網(wǎng)絡將定位信息發(fā)送到手機上。
[Abstract]:With the popularization of civilian, satellite navigation system is more and more deep into people's life. Whether in automobile navigation, traffic management or national defense security, satellite navigation system is becoming more and more important. At the same time, with the development of embedded technology, handheld satellite navigation terminal has become a hot spot in satellite navigation field. In view of the high requirement of processing speed and simple operation of navigation terminal, this paper chooses S3C2440 as processor and Linux as embedded operating system development platform, and designs satellite positioning terminal equipment based on Beidou system. Firstly, this paper introduces the related theory of embedded development and the basic principle of satellite navigation and positioning in detail, and explains the protocol content of NEMA-0183. Secondly, according to the actual needs of the navigation system, the appropriate system hardware module is selected, and each module is introduced in detail. The whole system is composed of the control module based on S3C2440, the Beidou UM220 module and the wireless transmission module GTM900-C. In the aspect of software, the development environment of embedded Linux is built, including the transplantation of BootLoader, the transplantation of Linux kernel, the construction of file system, the transplantation of Qt and so on. Then the application program of the system is designed, including serial port communication under Linux, satellite positioning module, wireless transmission module and embedded electronic map design, especially the in-depth analysis of MapInfo electronic map. The electronic map database based on SQLite is constructed to store the map details. Through the final experimental test, the system can complete the location function well, and can send the location information to the mobile phone through the GPRS/GSM network.
【學位授予單位】：南昌航空大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P228.4

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