无人直升机低空数字摄影与影像测量技术

研究和建立了一套无人直升机低空数字摄影与影像测量系统。该系统以无人直升机为飞行平台,以数字相机为传感器,直接获取高分辨率数字影像,具有垂直升降、低空作业、自主飞行等特点。详细介绍了该系统的工作原理,总结了航空摄影关键参数的设计方法,同时,提出了视距网格的飞行模式,增强了系统安全性;利用试验场相机检定的技术,实现了非量测数字相机在摄影测量中的应用。最后介绍了该系统在15 km2大比例尺测绘工程中的应用情况以及综合精度检测结果。

Technique of Low Aerial Photography and Photogrammetry System by Unmanned Helicopter

This paper studied and founded a low aerial photography and photogrammetry system by unmanned helicopter.By using unmanned helicopter remote sensing platform and a digital camera,the high-resolution digital photography could be captured directly.The advantages of this system were summarized as follows: vertical take-off and landing,low altitude flying,fully autonomous flight control.In this paper,we introduced the system's principle and summarized the method of designing the aerial photography's key parameters.At the same time,we put forward the flying model of sight-range grid.Thus,it could enhance the system's security.By using the technique of camera calibration in experiment felid,we realized the photogrammetry application with non-surveying digital camera.Finally,the paper introduced the application and precious checking results by making this system applied in the 15 km2 fields of a large-scale survey and mapping.