基于无人飞行器航测建立数字高程模型研究

为探索利用无人飞行器获取遥感影像并将之用于建立测区数字高程模型(DEM)的可行性,以南水北调山东省境内济平干渠部分区段为试验对象,进行了无人飞行器的遥感数据采集,并利用全数字摄影测量处理软件VirtuoZo对所得数据进行处理,生成测区数字高程模型.结果表明,数据处理过程中相对定向中误差较小,由于部分试验材料不能满足试验标准,绝对定向的中误差偏大,利用现有材料生成的数字高程模型精度不高.

Digital elevation model based on aerial UAV image.

To explore the feasibility of using the remote sensing images of unmanned aerial vehicle(UAV) to establish the digital elevation model(DEM) of the surveyed area,the authors took a part of South-to-North Water Transfer Project in Shandong Province,named Jiping main trench as the research area,through UAV,to get the RS image and to deal with the image data with VirtuoZo,which is a computer software of digital photogrammetry.In the end,the authors established a DEM of the object area.It was showed that the relative orientation of data processing error was smaller.As some test material could not meet the test standards,it directed the bigger errors.Using the existing material to produce DEM,its accuracy is not enough.