王榮 藺陸洲 路鵬飛 宋娟



摘 ? 要:北斗衛星導航系統是中國自行研制的全球衛星導航系統,也是繼GPS、GLONASS之后的第三個成熟的衛星導航系統。中國軟件評測中心通過實施基于北斗高精度導航定位的智能交通應用示范項目,開發出了由中心服務子系統、全球導航衛星系統(GNSS)基準站子系統、車載終端子系統和人員終端子系統構成的北斗高精度導航定位系統,以及與校車應用場景相配套的路徑規劃算法和聯合定位算法,演示系統在泰國進行了部署與測試,對其電子圍欄、實時軌跡、軌跡回放功能進行了驗證,并對其車載終端單點定位精度、RTK定位精度、車載終端速度精度、人員終端單點定位精度、人員終端偽距差分精度等關鍵性能指標開展了測試,測試結果進一步驗證了北斗高精度智能交通系統在國內外的應用可行性。
關鍵詞:瀾滄江-湄公河;北斗衛星導航系統;智能交通;高精度
中圖分類號: TN967.1 ? ? ? ? ?文獻標識碼:A
Abstract: BeiDou navigation system is the self-developed Global Navigation Satellite System of China and the third mature satellite navigation system after GPS and GLONASS. China Software Testing Center developed the BeiDou high precision navigation system by implementing the demonstration of intelligent transportation based on BeiDou Navigation Satellite System project. The system includes central service subsystem, GNSS reference station, vehicle terminal subsystem and personal terminal subsystem, using the path planning algorithm and the joint localization algorithm which match with the school bus demonstration scene. The system was deployed and tested in Thailand, and its electronic fence, real-time track and track playback functions were verified, and the key performance indexes of its vehicle terminal single point positioning accuracy, RTK positioning accuracy, vehicle terminal speed accuracy, personnel terminal single point positioning accuracy, Personnel Terminal pseudo-range differential accuracy were tested. The test results verify the application feasibility of BeiDou high precision system at home and abroad, and promote the application and popularization of Beidou Global System.
Key words: lancang river-mekong river; BeiDou navigation system; intelligent transportation; high precision
1 引言
北斗衛星導航系統(本文簡稱北斗系統)是我國著眼于國家安全和經濟社會發展的需要,自主建設、獨立運行的全球衛星導航系統,是為全球用戶提供全天候、全天時、高精度的定位、導航和授時服務的國家重要空間基礎設施。我國高度重視北斗系統建設發展,自20世紀80年代開始探索適合我國國情的衛星導航系統發展道路,形成了“三步走”發展戰略。2000年年底,建成北斗一號系統,為國內提供服務;2012年年底,建成北斗二號系統,為亞太地區提供服務;計劃2020年前后,建成北斗三號系統,為全球提供服務。……