无人机航测地形图的高程精度影响因素分析  

Analysis of Factors Infecting Height Accuracy in UAV Aerial Photographs

作　　者：史俊莉[1] 

机构地区：[1]河南工业职业技术学院,河南南阳473000

出　　处：《新技术新工艺》2014年第9期104-106,共3页New Technology & New Process

摘　　要：无人机航摄系统在各个领域的应用日益广泛,但是很多情况下拍照的精度较难满足要求。拍摄精度除了受制于硬件系统外,还受到工作姿态和位置等因素的影响。主要分析了像片倾角产生的原因,推导出了理想像对高差计算公式,在此基础上分析了像片倾角对高差的影响以及相机像片倾角和相机的电荷耦合器件(CCD)阵面放置位置对拍照精度的影响,并举例说明了如何根据CCD阵面放置方式来计算高程误差;最后,据此指出了相关的改进措施,包括提高飞行期间的稳定性,定期对无人机系统和航摄系统进行检修以及严格按照技术指导书进行摄航系统的安装等。The UAV aerial photographic system has been widely used in various fields.However,the shooting accuracy of the system sometimes can＇t meet the requirements,which is not only due to limitation of hardware system,but also because of effects of factors such as working posture and position.The paper analyzed the reason of tilt angle of camera photograph,deduced the calculating equation of dispersion for ideal image pair,which laid solid foundation of the influence of tilt angle to dispersion and the effect of the tilt angle of camera photograph and position of CCD array on shooting accuracy.Then,an example was illustrated to show how to calculate dispersion according to position of CCD array.Corresponding corrective measures were suggested such as improvement in stability during flying phase,periodically checking the UAV and aerial photographic system,and installation of the aerial photographic system according to technical instructions.

关 键 词：无人机航摄系统 高程精度 像片倾角 CCD阵面 

分 类 号：V279[航空宇航科学与技术—飞行器设计]