北斗卫星定位在机场高填方远程变形监测中的应用

分析北斗高精度定位技术应用在机场高填方工程变形监测中的优势与可行性，设计了基于北斗卫星定位的高填方机场变形监测系统。该系统中通过载波相位差分技术实现了北斗高精度定位，通过4G无线网络传输数据，将机场变形监测数据传输到云服务器，实现了远程自动测量。通过太阳能板和蓄电池，实现了稳定供电。为确定监测设备每天测量时长，设计试验分析北斗竖向测量精度与定位时长的关系。试验结果表明，每天定位时长为60 min的情况下北斗静态相对定位垂直方向精度优于3.6 mm，可以满足机场高填方变形监测的需求，且监测时长继续增加时精度提高不明显。通过定时开关设置在机场布置的监测设备每天工作70 min。

Application of Beidou satellite positioning to deformation remote monitoring of high fill airport

The advantages and feasibility of Beidou high-precision satellite positioning technology applied to the deformation monitoring of airport high fill engineering are introduced firstly. Then a deformation monitoring system based on the Beidou satellite positioning is designed for airport high fill engineering. In this deformation monitoring system, high-precision satellite positioning is realized by using the carrier phase difference technology. With the 4th generation mobile communication technology, deformation monitoring data is transmitted to the cloud server. This realizes automatic remote monitoring. For the purpose of making the power supply stable, solar panel and colloidal battery are used in the high fill airport deformation monitoring system. In order to determine the daily measurement time of monitoring equipment, a test is designed to study the relationship between Beidou satellite vertical measurement precision and positioning time. The test results show that the vertical precision of Beidou satellite static relative positioning is above 3.6 mm when the daily positioning time is 60 minutes. This precision meets the standard of airport high fill engineering deformation monitoring. And if the monitoring time is continued to increase, the precision will have little improvement. Use timing switch to set up monitoring equipment arranged in airport working 70 minutes automatically every day.