Research on Strategies for Improving the Accuracy of UAV Engineering Surveying in Complex Terrain
无人机复杂地形工程测量精度提升策略研究

摘要

无人机倾斜摄影测量技术以及基于激光雷达的数据采集技术应用于复杂地形区域的工程项目测绘当中存在着像片分辨率差异大、空三加密误差叠加、点云去除干扰点难度高等多种影响测量精度的因素的问题。本文对无人机复杂地形下工程项目的测量所受到的影响精度的主要因素进行了阐述，在硬件的选择、飞行设计、像控点布置、数据采集管理、多个传感器信息集成、以及后处理建立模型等方面进行分析并提出全链条式提高精度的方法。

Abstract

 In engineering surveying and mapping projects carried out in complex terrain areas, the application of UAV oblique photogrammetry and LiDAR-based data acquisition technology is affected by various factors that influence surveying accuracy, including large differences in image resolution, accumulated errors in aerial triangulation densification, and the difficulty of removing interference points from point clouds. This paper discusses the main factors affecting the accuracy of engineering surveying under complex terrain conditions using UAVs. It analyzes hardware selection, flight design, ground control point layout, data acquisition management, multi-sensor information integration, and post-processing model construction, and proposes a full-process approach to improving surveying accuracy.