PPK增强技术在柴达木盆地地震勘探中的应用

Application of PPK enhancement technology in seismic exploration in Qaidam Basin

在柴达木盆地,利用东方地球物理公司专业化软件GeoSNAP Base Control处理勘探施工中卫星定位仪的采集数据,再使用动态后处理差分解算出的物理点成果弥补实时动态采集质量不合格的点,最终融合出所需的成果数据,将该技术投入到地震勘探实际生产中,有效降低了RTK采集数据因差分数据链失锁、信号拥堵等未获得合格数据而导致的大量物理点事后补测事件,同时也通过PPK验证RTK成果的正确性,这个过程即PPK增强技术。本文采用物探生产数据探讨RTK与PPK融合的完好程度,说明其技术的可行性和效果。

In the Qaidam Basin,the specialized software GeoSNAP Base Control of BGP Company is used to process the data acquisition by satellite positioning instruments during exploration and construction.Then,the physical point results calculated by dynamic post-processing differential decomposition are used to compensate for the points with poor real-time dynamic acquisition quality.Finally,the required result data is integrated and applied to the actual production of seismic exploration,effectively reducing a large number of physical point post test events caused by RTK data acquisition failure to obtain qualified data due to differential data chain lock loss,signal congestion,etc.At the same time,the correctness of RTK results is also verified through PPK,which is a process known as PPK enhancement technology.This article uses geophysical production data to explore the completeness of the integration of RTK and PPK,and de-monstrates the feasibility of its technology.