北斗精密单点定位在城市工程测量中的应用试验

The analysis of BDS precise point positioning technique in urban engineering survey

北斗系统是我国自主研制的卫星导航系统,由于其三种不同类型的星座的设计现状,其在城市工程测量中具有巨大的潜力。针对基于北斗精密单点定位技术在城市工程测量中的可见卫星情况及其定位性能进行了分析和算例验证,结果显示,在不同卫星截止高度角的情况下,基于北斗精密单点定位技术可以有效保证可用卫星的数目,其测量精度可达厘米级,能够满足一般城市工程测量的应用。

Beidou satellite navigation system was developed by us with three type of satellite constellation,which has potential application in urban engineering survey. The analysis of BDS precise point positioning technique in urban engineering survey was employed in this paper,the result shows that the BDS PPP can obtain available satellite number,and the positioning accuracy can achieve centimeter level,which can ensure the application of urban engineering survey.