Research on the Method and Accuracy of Updating Mining Area Plan Based on Quickbird Imagery

摘要

Traditional methods for mapping the mining area plan are directly surveying in the fields that is low efficiency and high costs or adopting photogrammetry that is not suitable for the small area and may be more expensive than the high resolution satellite imagery. The Quickbird Ortho Ready Standard Imagery is a good choice for updating the mining area plan and used in my research works. RPC model with DEM and polynomial model(GCPs) is used to re-orthorectify and reference as local geodesy datum for Ortho Ready Standard Imagery. After that, we also used extra linear constrained conditions and azimuthally constrained conditions for accuracy enhanced. By using the extra conditions of constrained line and azimuth, the numbers of GCPs needed for the goal of precise geometry correction are decreased simultaneously. Tests showed that the accuracy of 5 GCPs is same as the 31 GCPs used in polynomial model in RPC with DEM for about 10 square kilometers area. The accuracy of updated map satisfies the accuracy standard of 1:2000 mining plan via statistic sample in the field surveying. The horizontal detail degree is prior to the 1:2000 topographic map.