轻小型机载激光雷达在风电场测图中的应用

Application of Mini UAV-borne LiDAR in Wind Farm Mapping

为解决风电场植被覆盖区域传统测量技术测量困难以及航摄测量精度低等问题,将轻小型机载激光雷达引入风电场测量中。结合轻小型机载激光雷达在风电场项目预可研设计阶段测量工作中的应用试验,以及测区内采集的平面、高程检查点验证了激光点云平面坐标X坐标的误差极大值为0.066 m,Y坐标的误差极大值为0.069 m,高程Z坐标极大值为0.299 m。研究结果表明轻小型机载激光雷达虽穿透性较弱仅能透过较为稀疏的灌木,但能够满足风电场项目大比例尺成图、纵横断面测量需求,且相较于大型航摄、激光设备在使用灵活性、空域申请、便捷性等方面都具有明显优势。

In order to solve the difficulties of traditional measurement technology and low accuracy of aerial measurement in the vegetation covered area of wind farm,Mini UAV-borne LiDAR is introduced into the measurement of wind farm.Combined with the application test of Mini UAV-borne LiDAR in the survey work in the pre-feasibility study and design stage of the wind farm project,and the plane and elevation check points collected in the survey area,it is verified that the maximum error of the plane coordinate X coordinate of the laser point cloud is 0.066m,the maximum error of the Y coordinate is 0.069m,and the maximum error of the elevation Z coordinate is 0.299m.The research shows that although the Mini UAV-borne LiDAR has weak penetration and can only penetrate sparse shrubs,it can meet the needs of large-scale mapping,longitudinal and cross-sectional measurement of wind farm projects,and has obvious advantages in use flexibility,airspace application and convenience compared with large aerial photography and laser equipment.