Three-dimensional geopositioning accuracy of Ikonos imagery
Three-dimensional geopositioning accuracy of Ikonos imagery
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DOI：
10.1111/0031-868x.00199
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发表时间：
2002-04-01
影响因子：
2.4
通讯作者：
Yamakawa, T
中科院分区：
文献类型：
--
作者：
Fraser, CS;Hanley, HB;Yamakawa, T
据报道，对 Ikonos 1 m 卫星图像的准确性潜力进行了调查。三个传感器方向/三角测量模型应用于“Geo”图像的立体和三图像配置，目的是实现亚米级精度的 3D 地理定位。所考虑的模型包括具有偏差补偿、仿射投影和直接线性变换的有理函数。墨尔本 Ikonos 测试场的测试结果已报告，这些结果表明，只要提供适当的高质量地面控制，Ikonos“Geo”图像就可以产生 3D 物点确定，其面积测量精度为 0.5 m，高度精度为 0.7 m。所达到的精度不仅符合严格传感器定向模型的预期，而且在实践中也很容易实现，只需要少量的地面控制点。
An investigation of the accuracy potential of Ikonos 1 m satellite imagery is reported. Three sensor orientation/triangulation models are applied to stereo- and three-imagc configurations of "Geo" imagery with the aim of achieving 3D geopositioning to sub-metre accuracy. The models considered Comprise rational functions with bias compensation, affine projection and the direct linear transformation. Test results from the Melbourne Ikonos Testfield are reported and these show that with modest provision of good quality ground control, Ikonos ''Geo" imagery can yield 3D object-point determination to an accuracy of 0.5 m in planimetry and 0.7 m In height. The accuracy achieved is not only consistent with expectations for rigorous sensor orientation models, but is also readily attainable in practice with only a small number of ground control points being required.