Application of PPP Technology and Airborne Lidar in Power Line Inspection

Through the power line test，this paper presents the feasibility of applying the PPP technology of GPS，GLONASS and BDS multi-source fusion to verify the application of the generated POS data and 3D point cloud data to the high voltage power line inspection.The POS data fusion and calculation of different strategies are used to analyze the POS data accuracy of the POS data，GPS，GLONASS and BDS multi-systems under the base station differential POS data and the single GPS system.The 3D point cloud is generated by the POS data of different strategies，and the deviation distance and distribution of differential point cloud data are statistically analyzed.Finally，it is concluded that the point cloud data generated by the single GPS is about 20-40 cm，and the distribution is not uniform and the deviation distance fluctuates greatly.It can not meet the requirement of the fine inspection of the power line.The point cloud data generated by the PPP technology of multi-source fusion and the distance deviation from the point cloud data under the base station difference are 10 cm in the direction of X，The direction of Y is 6 cm and the direction of Z is 4 cm.The distribution of point cloud data is uniform and stable，which basically meets the requirements of the power line inspection，and the point cloud data can also be used for the fine inspection of the power line.