Application Of Small Uav In Soil And Water Conservation Monitoring Of Production And Construction Projects

The traditional soil and water conservation monitoring method can not meet the needs of water and soil conservation monitoring work at present.How to use the existing technical methods to carry out timely,comprehensive and effective soil and water conservation monitoring of production and construction projects is an urgent problem to be solved.Based on this,this paper applies the remote sensing of UAV to the soil and water conservation monitoring of production and construction projects.With the low-altitude remote sensing aerial survey platform of Dajiang Elf 4pro UAV,using Agisoft Photoscan,Arc GIS and other software to obtain the key monitoring data: the position,length and area of the monitored object and using new methods to replace the previous work methods of soil and water conservation monitoring.So this article has strong scientific research value and practical significance.In this study,a linear production construction project was selected as the research object,taking a railway under construction in Shanxi Province as an example,a small UAV was used for aerial photography,and this low-altitude remote sensing technology was applied to the soil and water conservation monitoring of the production and construction project.Using Dajiang Elf 4 small drones for field data collection,using Agisoft Photoscan software for internal data processing,obtaining Google map tiles,orthophotos,DEM,3D models,using visual data acquisition method,computer aided Law,obtain relevant data needed for soil and water conservation monitoring.The research results are as follows:(1)Aerial data collected by dronesIn the process of soil and water conservation monitoring of production and construction projects,through the calibration of the PTZ camera and the selection of aerial meteorological conditions(cloudiness,solar altitude,wind speed),route planning,and image control point layout.The study clarified the principles and precautions to be taken in the use of unmanned aerial vehicles in water conservation monitoring to obtain higher quality aerial data.(2)Internal data processingUse Agisoft Photoscan software for in-house processing,including: low-quality aerial data culling,aerial image import,aerial image alignment,control point addition,aerial image optimization alignment,dense point cloud creation,mesh generation,texturegeneration,and finally obtain Google Map tiles,orthophotos,DEM and other results and verify their elevation accuracy.(3)Soil and water conservation monitoring data extraction based on internal processing resultsThrough visual data acquisition method and computer-aided method,he results of Google map tiles,orthophotos,DEM,etc.are obtained by using a single high-definition picture,video and internal processing directly obtained by aerial photography of the drone to obtain related data needed by soil and water conservation monitoring.Relevant data include: the visual characteristics of soil erosion and soil and water conservation measures,the classification of land use types,the calculation and change of land disturbance area,the volume calculation of earth and stone and so on.(4)Three-dimensional modeling of key monitoring targets and three-dimensional animation displayTaking a tunnel import waste slag yard,No.1 inclined shaft spoil ground,roadbed spoil ground and tunnel exit waste slag yard as an example,using the UAV aerial photography and Agisoft Photo Scan software to model the key monitoring targets in three dimensions,and using 3D anime display to display some typical spoil ground slag fields.It is very intuitive to grasp the characteristic information and changes of these key monitoring targets.With the help of Dajiang Elf 4pro unmanned low-altitude remote sensing aerial survey platform,this study obtained key monitoring data such as position,length,area and volume of monitoring objects,and carried out soil and water conservation monitoring of production and construction projects more efficiently and accurately.The application research of small drones in soil and water conservation monitoring of production and construction projects has strong scientific research value and practical significance.