PPK定位技术在地震测量作业中的可行性及应用效果

The feasibility and application effect of PPK positioning technology in seismic survey

在沙漠、山地、黄土塬等地区的地震勘探施工中,受障碍物遮挡,很多区域差分电台信号弱甚至没有信号,导致RTK作业时无法正常初始化,严重影响测量作业效率。随着北斗卫星系统的应用,GNSS接收机可实时接收的卫星数量大幅增加,PPK技术开始广泛应用。对PPK定位技术的技术原理、方法流程、定位精度等方面进行分析,并通过实验验证了在无网络条件下,PPK定位技术应用于地震测量的可行性,在实际生产应用中,PPK定位技术测量精度满足地震采集相关规范要求,作业效率显著提高,可作为RTK测量方法的补充。

In the seismic exploration construction in deserts,mountains,loess plateaus,and other areas,the signal of differential radio stations is weak or even no signal in many areas due to obstacles,which leads to the failure of normal initialization during RTK operation,and seriously affects the efficiency of measurement operation.With the application of the Beidou satellite System,the number of satellites that can be received by GNSS receivers in real time has increased significantly,and the PPK technology has been widely used.The technical principle,method process,and positioning accuracy of the PPK positioning technology are analyzed,and the feasibility of PPK positioning technology applied o seismic measurement under no network is verified through experiments.In actual production applications,the measurement accuracy of the PPK positioning technology meets the requirements of relevant specifications for seismic acquisition,and the operation efficiency is significantly improved,which can be used as a supplement to the RTK measurement method.