无人机航测角度对某露天矿区边坡测量精度的影响分析  

Analysis of the Influence of UAV Aerial Survey Angle on Slope Measurement Accuracy in an Open-pit Mining Area

作　　者：陈小鸿 Chen Xiaohong(Fujian Jingwei Surveying and Mapping Information Co.,Ltd.,Fuzhou,Fujian 350001)

机构地区：[1]福建经纬测绘信息有限公司,福建福州350001

出　　处：《工程技术研究》2022年第18期20-22,共3页Engineering and Technological Research

摘　　要：文章结合矿区边坡的几何形状不固定,边坡形状的变化速度较快的特点,为矿山边坡航拍测量提供一种简单、快速且行之有效的高精度测量方法,通过无人机低空航拍飞行测试,研究航拍镜头的角度变化对矿山边坡航拍测量精度的影响。测试结果表明:镜头角度为65°、75°和85°时的误差率较低,其精度较高;且镜头角度为75°时,所测两个不同矿区试验边坡的误差率均为0,此镜头角度下的精度最高。相比于人工测量结果而言,通过无人机航测结果所得到的矿区边坡剖面形状与实际边坡形状吻合度更高,采用此测绘方法可获得更高的地形测绘精度。In this paper, a simple, fast and effective high-precision measurement method is provided for the aerial photography measurement of the mine slope based on the characteristics that the geometry of the mine slope is not fixed and the slope shape changes rapidly. Through the low-altitude aerial photography flight test of the UAV, the influence of the angle change of aerial photography lens on the accuracy of aerial photography measurement of mine slope is studied. The test results show that the error rate is low and the accuracy is high when the lens angle is 65°, 75° and 85°. When the lens angle is 75°, the error rate of the two tested slopes in different mining areas is 0, and the accuracy is the highest under this lens angle. Compared with manual measurement results, the profile shape of the mine slope obtained by the UAV aerial survey results is more consistent with the actual slope shape and higher topographic survey accuracy can be obtained by using this surveying and mapping method.

关 键 词：无人机 矿山边坡 航测精度 镜头角度 

分 类 号：TU198[建筑科学—建筑理论] P231[天文地球—摄影测量与遥感]