摘要
采用全球导航卫星系统(Global Navigation Satellite System,GNSS)多系统组合定位技术可实时获取变形体的表面位移,是当前自动化监测的主要技术手段之一。本文采用基于北斗和全球定位系统(Global Positioning System,GPS)双频数据处理的组合定位方法,以提高GNSS变形监测的精度和可靠性,并结合自研的GNSS变形监测数据处理系统,通过解算变形监测实测数据,对比分析不同观测时长的监测精度,在1h观测时长定位精度可达到水平方向2mm以内,高程方向4mm以内,并且随着观测时段的延长,精度逐渐提高,12h观测时长在三个方向的坐标中误差均能达到1mm以内。
The application of Global Navigation Satellite System(GNSS)multi-system combined positioning can obtain the surface deformation of deformed body in real time,which is one of the main technique of automatic monitoring.This paper adopts a combined positioning method based on BeiDou and Global Positioning System(GPS)dual-frequency data processing to improve the accuracy and reliability of GNSS deformation monitoring.Through the calculation of the actual deformation monitoring data,the monitoring accuracy of different observation durations is compared and analyzed with the self-developed GNSS deformation monitoring data processing system.The positioning accuracy can reach within 2mm in the horizontal and within 4mm in the elevation in 1-hour's observation period.With the extension of the observation time period,the accuracy gradually improved,and the error of the 12-hour observation can reach within 1mm in all three coordinate components.
作者
丁乐乐
潘宇明
王震
孟凡效
Ding Lele;Pan Yuming;Wang Zhen;Meng Fanxiao(Tianjin Institute of Geotechnical Investigation&Surveying,Tianjin 300191,China)
出处
《工程勘察》
2022年第7期56-60,共5页
Geotechnical Investigation & Surveying
基金
天津市重点研发计划院市合作项目(18YFYSZC00120).
