The digital orthophoto map(DOM)production could be obtained by using UAV images.Taking DOM production project in extra large area of a district in Gansu province,this article discusses 1∶2 000 DOM production process using the digital aerial images obtained by CW-30 UAV based on PPS post differential system with the field image control points on the cluster image processing soft-ware Inpho8.0.The results show that the images have fine quality through visual inspection.The DOM accuracy also reaches the rela-tive specification requirements with the planimetric RMSE of 0.272 m and vertical RMSE of 0.234 m in the aerial triangulation result,and planimetric RMSE of element feature points is 0.336 m on the DOM.
digital imageUAVprecise positioning service(PPS)DOMaccuracy inspection
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