北斗在山区高速公路静态控制测量中的精度分析

摘要

结合贵州道新高速公路工程，探讨分析了北斗卫星导航系统在贵州山区复杂地形条件和观测环境下线状工程高等级控制测量中的应用，分别采用BDS、GPS单独解算与联合解算，并对不同系统基线解算与网平差的精度进行了对比分析。得出BDS在贵州山区复杂地形条件和观测环境中的基线解算与网平差精度与GPS相当，达到平面3.6 mm、高程6.6 mm的精度，能够满足山区高速公路工程应用的需求。%Combining with the Daoxian-Xinning Highway Engineering in Guizhou, we analyzed the application of BDS in high-grade control surveying of linear engineering under the complex topography and observation environments at Guizhou mountain area. Comparing precision of baselines and net adjustment resolved with BDS and GPS. The result shows that the pre-cision of baselines and net adjustment resolved with BDS and GPS is equivalent, and the precision of BDS reach 3.6 mm in plane and 6.6 mm in up direction, which meet the requirements of highway project in mountain area.