Satellite positioning technology has been widely used in all kinds of military and civil land, marine, space and aeronautical target positioning tasks, naviga tion activities and accurate surveying measurements since ...Satellite positioning technology has been widely used in all kinds of military and civil land, marine, space and aeronautical target positioning tasks, naviga tion activities and accurate surveying measurements since 90 s in the last cen tury due to its advantage in providing all-weather, real-time, three dimensional and high precision positioning information, as well as speed and accurate timing information. By now, it has already formed a new hi-tech industry basically.This paper briefly reviews the development of the global satellite positioning and navigation technologies including the basic information of China's "Plough navigation system", introduces the history of satellite positioning technology and its major application fields as well as the status quo of this being industri alized trade in China, gives an account of the writers' vision for the application and prospect of the satellite positioning technologies in China, and approaches the tactics and stresses of the satellite positioning technology's application and its industrialization future in China.展开更多
整周模糊度固定是精密单点定位(precise point positioning,PPP)实现快速厘米级定位的关键。传统双频无电离层组合窄巷模糊度固定存在组合观测噪声放大而导致固定成功率低的问题,进而影响PPP的收敛时间。为此,该文联合北斗全球卫星导航...整周模糊度固定是精密单点定位(precise point positioning,PPP)实现快速厘米级定位的关键。传统双频无电离层组合窄巷模糊度固定存在组合观测噪声放大而导致固定成功率低的问题,进而影响PPP的收敛时间。为此,该文联合北斗全球卫星导航系统(BeiDou Global Navigation Satellite System,BDS-3)播发的新频点,提出了一种兼顾组合噪声抑制的四频无电离层快速PPP模糊度固定方法,并结合自制教学仪器设计了实验流程。该方法利用搭建的基准站和试验车构建静态和动态的实验场景,测试结果表明相比传统四频方法所提方法,的模糊度固定成功率在静态和动态场景下分别提升了8.4%和15.8%,显著提成了PPP的收敛时间。该文对多频PPP的模糊度固定流程进行了详细的说明,有助于学生更好地理解多频观测量组合对加快模糊度固定的优势及误差抑制的应对措施。展开更多
文摘Satellite positioning technology has been widely used in all kinds of military and civil land, marine, space and aeronautical target positioning tasks, naviga tion activities and accurate surveying measurements since 90 s in the last cen tury due to its advantage in providing all-weather, real-time, three dimensional and high precision positioning information, as well as speed and accurate timing information. By now, it has already formed a new hi-tech industry basically.This paper briefly reviews the development of the global satellite positioning and navigation technologies including the basic information of China's "Plough navigation system", introduces the history of satellite positioning technology and its major application fields as well as the status quo of this being industri alized trade in China, gives an account of the writers' vision for the application and prospect of the satellite positioning technologies in China, and approaches the tactics and stresses of the satellite positioning technology's application and its industrialization future in China.
文摘整周模糊度固定是精密单点定位(precise point positioning,PPP)实现快速厘米级定位的关键。传统双频无电离层组合窄巷模糊度固定存在组合观测噪声放大而导致固定成功率低的问题,进而影响PPP的收敛时间。为此,该文联合北斗全球卫星导航系统(BeiDou Global Navigation Satellite System,BDS-3)播发的新频点,提出了一种兼顾组合噪声抑制的四频无电离层快速PPP模糊度固定方法,并结合自制教学仪器设计了实验流程。该方法利用搭建的基准站和试验车构建静态和动态的实验场景,测试结果表明相比传统四频方法所提方法,的模糊度固定成功率在静态和动态场景下分别提升了8.4%和15.8%,显著提成了PPP的收敛时间。该文对多频PPP的模糊度固定流程进行了详细的说明,有助于学生更好地理解多频观测量组合对加快模糊度固定的优势及误差抑制的应对措施。
