Acta Geodaetica et Cartographica Sinica ›› 2024, Vol. 53 ›› Issue (6): 1140-1153.doi: 10.11947/j.AGCS.2024.20230358

• Smart Surveying and Mapping • Previous Articles     Next Articles

Intelligent site selection method for UAV-dropped GNSS landslide monitoring equipment

Hao XU1,2,3(), Qin ZHANG1,2,3(), Li WANG1,2,3, Bao SHU1,2,3, Yuan DU1,2,3, Guanwen HUANG1,2,3   

  1. 1.College of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China
    2.State Key Laboratory of Geographic Information Engineering, Xi'an 710054, China
    3.Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, Xi'an 710054, China
  • Received:2023-08-25 Published:2024-07-22
  • Contact: Qin ZHANG E-mail:xuhao@chd.edu.cn;dczhangq@chd.edu.cn
  • About author:XU Hao (1996—), male, PhD candidate, majors in landslide multi-source monitoring data fusion algorithm. E-mail: xuhao@chd.edu.cn
  • Supported by:
    The National Natural Science Foundation of China(42127802);The National Key Research and Development Program of China(2021YFC3000503);The Fundamental Research Funds for the Central Universities, CHD(300102263202)

Abstract:

The GNSS technology is widely used in landslide deformation monitoring. However, in complex and hazardous landslide areas, it is difficult for personnel to access, and the installation of GNSS monitoring devices faces challenges. The UAV-dropped deployment technology offers a potential solution to this problem, but it requires appropriate target delivery locations for the UAVs. Traditional site selection methods mainly rely on expert field surveys, which fail to meet the requirements of such scenarios. To address this, this study first utilizes drone aerial photography and InSAR-Stacking technology to obtain digital surface models (DSM), digital orthophoto maps (DOM), and surface deformation rate maps of the target site. Then, based on deep learning, terrain analysis, and other methods, the key site selection factors such as historical deformation, crack distribution, slope, surface roughness, vegetation index, and slope direction are extracted. Finally, an analytic hierarchy process is employed to intelligently evaluate the suitability of different locations within the landslide area for UAV-dropped deployment of GNSS monitoring devices and recommend the coordinates of the target delivery locations. The site selection experiments were conducted in the Heifangtai landslide area in Gansu province, China. The suitability of the selected locations within this area was assessed, and four airdrop positions for GNSS monitoring devices were recommended. The effectiveness of the proposed method was validated through on-site observations and historical station deformation sequences. This method comprehensively considers the demands of deformation monitoring, deployment difficulty, observation conditions, and continuous operation, enabling efficient evaluation of the suitability of equipment deployment in the site selection area. It holds significant reference value for the unmanned and intelligent deployment of GNSS monitoring devices.

Key words: GNSS, UAV dropping, landslide monitoring, monitoring station site selection, analytic hierarchy process

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