低空机载GPS摄影测量在1∶1000地形图测绘中的应用  

The Application of Low Altitude Airborne GPS Aerial Photogrammetry in 1 ∶ 1000 Surveying and Mapping Topographic Map

作　　者：刘德明[1] 

机构地区：[1]合肥市测绘设计研究院,安徽合肥230061

出　　处：《城市勘测》2014年第3期24-26,共3页Urban Geotechnical Investigation & Surveying

摘　　要：低空机载GPS摄影测量技术,现已逐渐成为空间数据获取的重要手段,但由于所摄航片幅面小、旋偏角大、航线弯曲度大、像片重叠不规范,给航测生产带来了一定的困难,加大了外业测量的工作量,其优势没有得到真正显现。本文结合生产实际,介绍了按交叉航线进行低空机载GPS航空摄影,区域网平高控制点采用4点布设,按现行规范规定的精度要求进行空三加密、测制1∶1 000比例尺地形图的生产作业过程及关键工序的技术措施。The low altitude airborne GPS aerial photogrammetry has already gradually become an important means of spatial data collection technique ,but there are some troublesomes existing in photogrammetric production process because of the small image breadth ,large rotary angle ,large airline bending degree ,non-standard overlap setting in aerial photo-grammetry .These problems limit the advantage of this technology , as well as increase the work load of surveying .Ac-cording to production practice ,this paper presents the layout intersected flight lines for low altitude airborne GPS aerial photogrammetry ,in which the layout method of plane and height control points of local area network is 4-point method . And the means of aerial triangulation encryption and the production process and key working procedure of surveying and mapping large scale （1：1000 ） topographic map based on specification required precision was introduced .

关 键 词：交叉航线 低空机载GPS航空摄影 空三加密 精度 

分 类 号：P231[天文地球—摄影测量与遥感]