黄河上游地区WorldView影像测图成果可靠性分析

Analysis of the Reliability of the Plotting Product of the WorldView Image in the Upper Reaches of the Yellow River

在高原与大面积水域相间区域，WorldView高分辨率影像的测图成果否达到精度要求，尤其是在不同数量的外业控制点下的成果可靠性，很有讨论的必要。本文以测制黄河上游甘肃甘南段数字地形图为例，对其加密成果做精度检测。实践证明，在野外实做控制点与WorldView影像自带参数文件共同参与下，相比无控制点的区域加密计算方法，能够有效提高空中三角测量成果的精度，还可以在保证所测图成果可靠性的前提下，减少人力物力投入，保证作业效率。

It is necessary to examine the precision of the plotting product of the high resolution WorldView image in the area with large plateau and large water area. Especially, the product reliability of the high resolution WorldView image should also be examined with the different number of control points in the field work. This article discusses the precision of the photogrammetie control product as an example of plotting the digital map in the upper reaches of the Yellow River at the Gannan municipality, Gansu province. It is proved that this method could improve the precision of the photogrammetic control product effectively with joining both field work control points and the auxiliary parameters of the WorldView image, compared with no control point. At the same time it can reduce the cost of the manpower and material resource and also assure the field work efficiency.