PCI进行Spot5卫星影像正射处理像控布设研究

为探讨Spot5卫星影像正射处理像控布设，以PCI软件处理1A级Spot5制作第二次全国土地调查底图为例，从成图精度、控制点的粗差探测与定位、以及可靠性的布点方案的改进，探讨了像控点的数量与分布，以求得成图质量与经济效益的有机平衡。实验结果表明，采用均匀分布的16点或25点布点方案，或角偶布设点组的9点或13点布点方案，成图精度、可靠性均能满足要求，相比之下角偶布设点组的9点或13点布点方案节约了外业工作量。

Image Control Point Design of Using PCI Geomatica V9.1 Ortho Processing Spot5 Satellite Image

To explore the control point lay out scheme of Spot5 image orthorectification, to achieve a balance between mapping accuracy and economical benefit the number and distribution of control points are discussed from three aspects: mapping accuracy, gross error detection and locating and reliability of layout scheme. Experiment is done by making 1A level Spot5 image the second national land use investigation base map using PCI Geomatica V9.1. The experiment result implies using uniform distribution of 16 points or 25 points stationing plans,or even occasionally builds a group 9 points or 13 points stationing plans, mapping accuracy and reliability are satisfied. The 9 points or 13 points stationing plans save field work- load.