Discussion on the application of GNSS naviga-tion and positioning in petroleum geophysical exploration
In petroleum geophysical exploration,RTK measurement has always been the main measurement method of satellite navigation and positioning.However,with the efficient operation of geophysical exploration acquisition and the complexity of exploration terrain,RTK measurement has affected the efficient operation of geophysical exploration acquisition.The application of GNSS pseudo range single point positioning,PPK+tech-nology and Beidou PPP(Precise Point Position)provides a new way for navigation and positioning of petroleum geophysical exploration.Therefore,this paper introduces the Beidou satellite navigation system and the new functions of beidou-3 in detail.It separates the petroleum geophysical survey into setting out and measurement,and focuses on the navigation accuracy of pseudo range single point positioning.Through the principle and a large number of data,it is verified that the navigation accuracy of GNSS pseudo range single point positioning is less than 1.5 m in the unobstructed area and less than 2 m in the difficult area,which can be used for the setting out of petroleum geophysical physical points.The external coincidence accuracy of Beidou PPP under good observa-tion conditions is tested.The plane average is 0.091 m and the elevation average is 0.169 M;PPK+technology is proposed.Pseudo range single point positioning and Beidou PPP-B2b are used as physical point setting out method,and PPK is used as physical point measurement method.The change of operation mode requires the sur-veyors to have higher professional skills.At the same time,it can improve the collection efficiency of geophysical exploration and reduce the collection cost.
BDS-3pseudo range single point positioningPPK+technologyradial accuracy
万方数据
维普
