摘要
文中介绍了GPS辅助空中三角测量的理论和方法,通过搭载高精度差分GPS接收机完成无人机航测系统改造,对嘉峪关测区451.30km^2数字正射影像生产实验。结果表明,在GSD为8cm情况下,应用GPS辅助空中三角测量技术,布设71个平高地面控制点后,平面中误差达到了0.25m,完全满足1:1000数字正射影像制作的精度要求且节省了89%以上的外业工作量,提高了工作效率,缩短了航测周期,充分证明该技术应用于数字正射影像制作是可行的,具有无可比拟的优越性。
In this paper, the theory and method of GPS-aided aerial triangulation were introduced. The UAV aerial survey system was reconstructed by carrying a high-precision differential GPS receiver. The production experiment of 451.30 km^2 digital orthophoto image in Jiayuguan survey area was carried out. The results showed that when the GSD was 8 cm and the GPS-aided aerial triangulation technology was applied, 71 control points were laid on the flat ground, the plane median error reached 0.25 m, which fully met the accuracy requirement of 1:1 000 digital orthophoto image production and more than 89% of the field work was saved, the work efficiency was improved and the aerial survey period was shortened. It fully proved that the application of the technology in the production of digital orthophoto image was feasible and had incomparable advantages.
作者
康建锋
陈稳成
王立阳
Kang Jianfeng;Chen Wencheng;Wang Liyang(Gansu Province Institute of Engineering Surveying and Mapping Lanzhou 730000,China;Gansu Province Emergency Sureying and Mapping Engineering Research Center.Lanter,Lanzhou 730000,China)
出处
《矿山测量》
2019年第4期43-46,共4页
Mine Surveying
基金
国家自然基金项目(41461011)
