大面积风电场无人机免像控点快速测图方法  

Fast Mapping Method of UAV Image without Ground Control Point for Large Area Wind Farm

作　　者：尚海兴[1] 邢文 SHANG Haixing;XING Wen(Powerchina Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2020年第S02期46-50,共5页Northwest Hydropower

基　　金：中国电建西北勘测设计研究院有限公司科技项目。

摘　　要：提出适宜大面积风电场的固定翼无人机免像控点快速测图整体解决方案,其关键步骤是附加综合系统误差参数的免像控点空三计算模型和非量测相机的网格镜头畸变修正与曝光时差补偿修正标定技术。实验分析结果推荐"四周9点+中间3点"的固定翼无人机多架次免像控点平差方案,空三精度满足1∶2 000测图高程精度要求,在确保精度可靠性的同时减少了大量外业像控点测量工作,突破了无人机航测几何精度严重依赖地面像控点测量工序的传统作业模式,取得无人机"飞完即测"的技术效益和降本增效的经济效益。The total solution of fast mapping free of ground control points for fixed wing UAV suitable for large-scale wind farms is proposed in the article.The key step in the solution is to add non-ground control point aerial triangulation calculation model with integrated system error parameters,and the calibration technology of non metric camera's mesh lens distortion correction and exposure time difference compensation correction.The experimental analysis results recommend"9 points around+3 points in the middle"technical solutions.The results show that the aerial triangulation accuracy can meet the requirement of 1:2000 mapping elevation accuracy.The solution can not only ensure the survey accuracy and reliability,but also significantly reduce field image control point measurement work,and avoid the traditional operation mode that the geometric accuracy of UAV aerial survey depends heavily on the ground image control point measurement process,obtaining the technical benefits of UAV"measurement after flight"and the economic benefits of cost reduction and efficiency increase.

关 键 词：固定翼无人机 非量测相机 空三测量 免像控点 PPK 

分 类 号：V279.2[航空宇航科学与技术—飞行器设计] P23[天文地球—摄影测量与遥感]