无地面基站机载GNSS辅助航摄技术在DLG生产中的应用  

Application of Airborne GNSS Assistant Aerial Photography Technology Without Ground Base Station in DLG Production

作　　者：严亚敏[1] Yan Yamin(Shaanxi Institute of Water Resources and Electric Power Survey and design,Xi’an 710001,Shaanxi)

机构地区：[1]陕西省水利电力勘测设计研究院,陕西西安710001

出　　处：《陕西水利》2023年第11期137-138,141,共3页Shaanxi Water Resources

摘　　要：以陕西省东庄水库供水工程1∶1000数字线划图(DLG)生产为例,通过对CW-25 E无人机搭载飞思相机航摄系统集成、像控点布设、空三加密计算等主要技术环节的研究,提出了一种新的无地面基站机载GNSS辅助航摄技术。该技术仅需在测图航线与构架航线交叉处各布设一个平高控制点,即可满足大比例尺数字线划图(DLG)生产的需要,在保证精度的同时大量减少空三加密计算对地面像控点数量的需求。Taking the 1∶1000 digital line drawing(DLG)production of the water supply project of Dongzhuang Reservoir in Shaanxi Province as an example,this paper proposes a new airborne GNSS auxiliary aerial photography technology without ground base station through the research of the main technical links such as the integration of the CW-25 E unmanned aerial camera aerial photography system,the placement of image control points,and the encryption calculation of the aerial camera.This technology can meet the needs of large scale digital line drawing(DLG)production only by arranging a leveling control point at the intersection of the mapping route and the frame route,and greatly reduce the demand for the number of ground image control points for the three dimensional encryption calculation while ensuring the accuracy.

关 键 词：航摄系统集成 无地面基站 GNSS辅助航摄 构架航线 

分 类 号：TV41[水利工程—水工结构工程]