一款微小型消费级无人机测绘系统的检校与测图精度分析

Mapping Accuracy Analysis and Calibration of a Micro UAV Consumer Surveying System

针对消费级无人机平台搭载的非量测数码相机在进行大比例尺测图应用中的镜头畸变问题，建立了适合于微小型无人机的高精度地面检校场，对其搭载的非量测数码相机进行检校，得到了高精度的检校参数，并选取典型丘陵地形作为实验区，进行了大比例尺测图实验和精度评价。结果表明，消费级无人机搭载的非量测数码相机基于该地面检校场检校出来的相机参数精度可靠，空中三角测量处理结果为：平面精度优于10cm，高程精度优于20cm，能够满足相应规范中大比例尺测图的精度要求。

In order to solve the problem of lens distortion in non-measurement digital camera equipped on consumer UAV platform, a high-precision calibration field suitable for micro UAV is established to calibrate the non-measurement digital camera and obtain high-precision calibration parameters to eliminate distortion error. An area featuring typical hilly terrain is selected to conduct large scale mapping experiment and accuracy evaluation. The results show that the accuracy of camera parameters based on ground calibration field is reliable, and the plane and elevation accuracy are better than 10cm and 20cm respectively in trian- gulation processing, which can satisfy the requirement of large-scale mapping in corresponding specifications.