Integrated GPS/GLONASS/BeiDou Autonomous Positioning: Method and Performance Analysis

論文翻譯標題: GPS/GLONASS/BeiDou整合式系統自主導航定位之方法與效能分析
  • 葉 怡靖

學生論文: Master's Thesis


With the developments of satellite positioning technology the demand for high-quality navigation service is increasing However the technology is easily affected by limited satellite visibility and poor satellite geometry especially in obscured areas In order to provide continuous global positioning capability the usage of multiple GNSS constellations is an effective method for solving the visibility and geometry problem thanks to the increased number of visible satellites Thus the goal of this study is to propose a method of integrating GPS GLONASS and BeiDou systems for improved autonomous navigation as well as to analyze the improved performance In addition a variety of observational conditions are simulated by adjusting satellite cut-off elevation angles The Pope Tau test is adopted for data blunder detection to prevent the solution from being affected by outliers; furthermore the Helmert variance component estimation (VCE) is applied to properly model the weighting of the heterogeneous data from different satellite systems The results show that the VCE is effective in improving positioning accuracy Moreover multiple GNSS is adopted so that the GPS/GLONASS/BeiDou integrated system is capable of providing sufficient visible satellites and strengthened satellite geometry Consequently the positioning accuracy of the integrated system is greatly improved especially in the obscured environments It can be known that it is essential to use multiple GNSS in urban or signal-blocked areas so as to ensure the users good autonomous navigation service
獎項日期2017 九月 14
監督員Ming Yang (Supervisor)