IMU/DGPS辅助航空摄影新技术在铁路勘测中的应用被引量：13

Application of IMU/DGPS Assistant Aerial Photogrammetry Technology in Railway Surveying

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摘要航空摄影过程中加装POS设备,可直接测定航摄仪的姿态参数,通过对IMU、DGPS(差分GPS)数据进行联合后处理,可以快速获取测图所需每张航片的高精度外方位元素。再通过POS辅助空中三角测量处理,在无控或少量控制点的情况下满足铁路大比例尺成图需要。首先介绍了IMU/DGPS辅助航空摄影测量的工作原理,结合铁路项目试验飞行数据的处理结果,进行了精度、可靠性、误差来源等分析,并将其与传统航空摄影测量进行比较,最后总结IMU/DGPS辅助航空摄影新技术在铁路航测选线中的应用前景。

作者杨少文

机构地区中铁二院

出处《铁道勘察》 2011年第5期25-29,共5页 Railway Investigation and Surveying

关键词 IMU DGPS POS 航空摄影测量

分类号 P231 [天文地球—摄影测量与遥感]

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参考文献10

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