Method to calibrate the coordinates of transmission towers based on satellite images
MA Yutang1(), PAN Hao1, ZHOU Fangrong1, HUANG Ran1, ZHAO Jianeng1, LUO Jiqiang2, LIU Jing2,3, SUN Haoxuan4(), JIA Weijie5, ZHANG Tao6
1. Joint Laboratory of Power Remote Sensing Technology, Electric Power Research Institute, Yunnan Power Grid Company Ltd., Kunming 650217, China 2. China Academy of Space Technology Institute of Spacecraft System Engineering, Beijing 100094, China 3. School of Computer Science & Engineering, South China University of Technology, Guangzhou 510006, China 4. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China 5. China Aero Geophysical Survey and Remote Sensing Center for Natural Resource, Beijing 100083, China 6. Equipment Procurement Service Center of China’s Central Military Commission (CMC) Equipment Development Department (EDD), Beijing 100009, China
In order to realize the refined line inspection management of transmission lines, improve its operation and maintenance efficiency, realize satellite intelligent inspection, and accurately find the defects and hidden dangers of towers and transmission lines, the paper took the coordinates of transmission line towers in Kunming City, Yunnan Province as an example and proposed a method to calibrate the coordinates of transmission towers using satellite images. The method first uses the reference base-map data as the basis to match the control points and uses the digital elevation model (DEM) to perform geometric correction on the original remote sensing image. Then combined with such technologies as shadow detection and edge detection and visual interpretation, the calibrated tower coordinates are obtained. The experiment verified the geometric correction accuracy of the SuperView-1 (SV1) and Gaofen-2(GF2) satellite images in the Kunming area, and the errors in the plane after correction were 0.931 and 1.387 m, respectively. In addition, the experiment verified the calibration accuracy of the old tower coordinates on the two lines. The results show that the plane accuracy of the tower has increased from 13.811 m and 8.256 m to 5.970 m and 5.104 m, respectively, which meets the basic power grid requirements. This method can realize the calibration of the tower coordinates, reduce the workload of manual inspection, and improve the efficiency of line inspection. With the explosive growth of remote sensing image data, multi-source images from the space and ground will continue to be combined, and the technology for the positioning of transmission towers based on satellite remote sensing images will have a broader development prospect.
马御棠, 潘浩, 周仿荣, 黄然, 赵加能, 罗继强, 刘靖, 孙浩轩, 贾伟洁, 张涛. 基于卫星影像的输电杆塔坐标校准方法[J]. 自然资源遥感, 2022, 34(2): 63-71.
MA Yutang, PAN Hao, ZHOU Fangrong, HUANG Ran, ZHAO Jianeng, LUO Jiqiang, LIU Jing, SUN Haoxuan, JIA Weijie, ZHANG Tao. Method to calibrate the coordinates of transmission towers based on satellite images. Remote Sensing for Natural Resources, 2022, 34(2): 63-71.
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2022, Vol. 34 
), 潘浩1, 周仿荣1, 黄然1, 赵加能1, 罗继强2, 刘靖2,3, 孙浩轩4(
