北斗与GPS在桥梁变形监测中的对比分析

Comparative Analysis of Beidou and GPS in Bridge Deformation Monitoring

目前我国北斗导航系统已经完成第二阶段区域系统的建设,利用北斗导航定位技术进行桥梁变形监测是今后发展的必然趋势。本文分析了北斗定位技术在桥梁变形监测中的的优势,并与GPS定位技术作对比分析,结果表明:在监测区域内,北斗二号的可见卫星数要略多于GPS可见卫星数,卫星几何精度因子略低于GPS,数据质量与GPS相当,相对定位精度略优于GPS,平面定位精度在1~2 cm,水平定位精度在5~6 cm。

At present, China Beidou navigation system has completed the construction of the second phase regional system. The use of Beidou navigation and positioning technology for bridge deformation monitoring is an inevitable trend in the future development. This paper analyzes the advantages of Beidou positioning technology in bridge deformation monitoring, and compares it with GPS positioning technology. The results show that in the monitoring area, the number of visible satellites of Beidou-2 is slightly more than the number of GPS visible satellites, satellite geometric accuracy. The factor is slightly lower than GPS, the data quality is comparable to GPS, the relative positioning accuracy is slightly better than GPS, the plane positioning accuracy is 1-2 cm, and the horizontal positioning accuracy is 5-6 cm.