BDS基准网处理技术在大坝安全监测中的应用

Application of BDS Datum Network Processing Technology in Dam Safety Monitoring

为准确了解大坝安全状态,减少传统大坝安全监测受气候、环境等因素的影响,基于BDS基准网处理技术实现了大坝安全监测自动化。在BDS基准网处理中,采用双差基线解算模型,并构建大气延迟修正算法,开发了BDS基准网处理软件。通过该软件在国内某大型水利大坝开展BDS安全监测应用测试,并将测试结果与商用软件TBC+COSA进行对比。结果表明,该软件在实验区域内的监测精度与商用软件相当,基于BDS-3和BDS-2/BDS-3两种模式下的水平定位精度均能达到±1 mm,说明该软件的解算成果可靠,也充分说明基于BDS-3的基准网处理技术可满足高精度自动化大坝安全监测的要求。

In order to accurately obtain the dam status and reduce the influences of traditional dam safety monitoring by climate,environment and other factors,we realized the automation of dam safety monitoring based on BDS datum network processing technology.In the BDS datum network processing,we used double-difference baseline solution model to construct an atmospheric delay correction algorithm,and developed the BDS datum network processing software.Then,we used this software to carry out application tests in a water conservancy dam,and compared the results with the commercial software TBC+COSA.The results show that the monitoring accuracy of this software is comparable to that of the commercial software in this area,and the horizontal positioning accuracy based on BDS-3 and BDS-2/BDS-3 modes can reach±1 mm,which indicates that the solution of this software are reliable,and fully demonstrates that the datum network processing technology based on BDS-3 can satisfy the requirements of high-precision automation dam safety monitoring.