摘要
一直以来,高程精度限制了航测技术的进一步发展和应用,随着高重叠度、多基线低空无人机航测及计算机图像技术的发展,有效提高了高程精度,基于低空无人机平台的数字航摄技术也被广泛应用于各工程测量领域。简要阐述了无人机摄影测量的基本原理,并对无人机航测法成图过程中的理论高程精度进行了公式推导,科学分析了高程误差的主要影响因子。结合具体工程实例,通过航摄系统的选择、航摄路线的设计、航摄数据的处理、模型数据的采集及成果分析来验证该技术在场地抄平后平整度检测工作中的可用性和实际应用效果,为日常的场地抄平检测工作探索一条崭新途径。
All the time,elevation accuracy has restricted the further development and application of aerial survey technology.With the development of high overlap,multi-baseline low-altitude UAV aerial survey and computer imaging technology,the elevation accuracy has been effectively improved.Aerial photography technology is also widely used in various engineering measurement fields.This article briefly explains the basic principles of UAV photogrammetry,formulates the theoretical elevation accuracy in the process of UAV aerial survey mapping,and scientifically analyzes the main influencing factors of elevation errors.Combined with specific engineering examples,the availability and practical application of the technology in the flatness detection after the leveling of the site are verified by the selection of aerial photography systems,the design of aerial photography routes,the processing of aerial photography data,the collection of model data and the analysis of results Effect,exploring a new way for daily site leveling detection.
作者
罗娇
董恒棣
LUO Jiao;DONG Heng-di(Xuzhou Surveying and Mapping Research Institute,Xuzhou Jiangsu 221000,China)
出处
《现代测绘》
2020年第5期44-49,共6页
Modern Surveying and Mapping
关键词
无人机
抄平检测
三维模型
二等水准
Unmanned Aerial Vehicle
leveling detection
3D model
second-class
