无人机激光雷达测量关键参数设置研究  

Research on Key Parameter Setting of UAV LiDAR Measurements

作　　者：王魁 杨帅 郑蓉 朱宏波 余洋 WANG Kui;YANG Shuai;ZHENG Rong;ZHU Hongbo;YU Yang(Northwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Xi'an 710075,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075

出　　处：《电力勘测设计》2025年第3期38-44,共7页Electric Power Survey & Design

基　　金：中国电力工程顾问集团西北电力设计院有限公司科研项目“无人机激光雷达技术在电力工程测绘中的应用研究”(NW-RD036-2023)。

摘　　要：为准确反映地形特征,提高无人机激光雷达数据的获取质量,以某型号的长测程高精度激光雷达为例,设计对比实验,通过采用不同航飞高度、激光脉冲频率和旁向重叠度进行数据采集,结合点云密度统计与高程精度验证,研究3项参数变化对数据质量的影响。结果表明:航飞高度与点云数量呈负相关,但对高程精度无显著影响;提升脉冲频率可增加点云数量,但高频率会引发能量衰减与测距模糊问题;增加旁向重叠度会提升点云数量,保证数据完整性,而对高程精度无显著影响。基于实验结果,提出无人机激光雷达在不同植被覆盖度、不同地形类别作业场景中的量化参数设置建议。In order to improve the data quality of unmanned aerial vehicle(UAV)piggyback light detection and ranging(LiDAR),a comparative experiment is designed using a long-range,high-precision LiDAR system.By adopting different flight altitudes,laser pulse frequencies,and side overlap rates,combining with the analysis of the point cloud density and elevation accuracy,the impacts of these 3 parameters on the quality of the data is investigated.The results indicate that flight altitude is negatively correlated with point cloud density,but has no significant effect on elevation accuracy;increasing the laser pulse frequency will raise the density of point cloud,however,a high frequency can cause energy attenuation and ranging ambiguity;a higher side overlap rate will increase the density of point cloud and ensure the data completeness,but has no significant effect on elevation accuracy.Based on the experimental results,the quantitative parameter settings for UAV LiDAR in scenarios with different vegetation coverage and different terrain types are proposed.

关 键 词：无人机 激光雷达 航飞高度 旁向重叠度 脉冲频率 点云 

分 类 号：TK01[动力工程及工程热物理] P2[天文地球—测绘科学与技术]