北斗卫星导航系统在工程测量中的研究与应用

北斗卫星导航系统是中国自主发展,独立运行的全球卫星导航系统,目前已经发射了16颗卫星,基本实现了亚太地区的导航定位功能。本文通过实测北斗数据和GPS(美国全球定位系统)数据,分析比较了北斗卫星导航系统单点定位的精度与GPS单点定位的精度。同时,对北斗卫星导航系统和GPS系统组合的单点定位结果进行了分析。结果显示,北斗卫星导航系统的单点定位精度与GPS单点定位精度很接近,而两个系统的组合则显著地提高了可用卫星数量,改善了定位精度,增强了定位的可靠性。

Research and Application of BeiDou Navigation Satellite System in the FieldofConstruction Surveying

The BeiDou Navigation Satellite System is a globe satellite navigation system which is developed by China and operated independently .Nowadays,the function of navigation and positioning of BeiDou in Asia Pacific region has been basically achieved by those 16 satellites that had already been launched .This article analyzes and compares the sin-gle point positioning accuracy of BeiDou Navigation Satellite System and GPS by measured data .Meanwhile,a combined analysis of single point positioning based on BeiDou Navigation Satellite System and GPS has been studied .The results show that the accuracy of these two navigation systems is very similar , and the integrationof these two systems could sharply improve the numbers of available satellites as well as the accuracy of single point positioning .In addition,the combination could improve the reliability as well .