高原山区天狼星无人机航测精度分析

传统的高原山区无人机航测内外业流程复杂且工作效率低。天狼星无人机拥有先进的免像控航测技术，可以快速地获取高分辨率的多元数据，并能够大大减少内外业工作时间。本文选取云南丽山村为航测区域。通过对航测数据进行处理获得数字正射影像（DOM）和数字表面模型（DSM）。从正射影像上测量检测点的平面坐标，并在数字表面模型上测量检测点的高程值，通过解算获取误差，然后与规范标准进行对比完成平面精度和高程精度的检验。结果表明，平面中误差为0.129 m；高程精度最大误差为0.221 m，最小误差为0.068 m；高程中误差为0.086 m。数据精度符合规范要求，证明了天狼星无人机免像控航测技术在高原山区应用的可行性。通过对天狼星无人机在云南丽山村的航测数据进行精度分析，为同类地形中无地面像控的航测提供了参考和数据支持。

Precision analysis of aerial photogrammetry of the Sirius UAV in plateau mountain area

The office work and field work of traditional UAV aerial photogrammetry in plateau mountains area are complex and inefficient. The Sirius UAV has advanced non-GCPs aerial photogrammetry technology that can quickly acquire high-resolution multivariate data and greatly reduce data processing and field work hours. This paper selects Lishan Village in Yunnan for the aerial photogrammetry area. Digital orthophoto (DOM) and digital surface model (DSM) are obtained by processing aerial photogrammetry data. Measuring the plane coordinates of the detection point from the orthophoto image and measuring the height of the detection point on the digital surface model. The error is obtained by calculation, and then compared with the specification standard to complete the inspection of plane precision and height accuracy. The results show that the mean square error of plane is 0.129m; the maximum error of the elevation accuracy is 0.221m, the minimum error is 0.068m; the mean square error of height is 0.086m. The accuracy of the data meets the requirements of the specification, which proves the feasibility of Sirius UAV non-GCPs aerial photogrammetry technology applied in the plateau mountains area. Through the accuracy analysis of the aerial photogrammetry data of Sirius UAV in Lishan Village, Yunnan, it provides reference and data support for aerial photogrammetry non-GCPs in similar terrain.