Auto-registration and orthorectification system for the HJ-1A/B CCD images

Time-series remote sensing data can provide vegetation information in different stages in one growing period, which is very helpful for the understanding of the dynamic of land cover. As the basic data source of ChinaCover, the multi-spectral CCD images of HJ constellation have the same 30m spatial resolution and visible to near infrared band as other earth resource satellite. The newly launched small constellation of environmental and disaster mitigation (HJ-1A/B) are developed for the frequent natural disasters and environmental problems in China. In order to satisfy the immense data processing requirements, this study constructed an auto-registration and orthorectification system for the HJ-1A/B CCD images according to the data characters. The system has been extensively used in the pre-processing procedure of HJ-1A/B CCD images for the LUCC mapping for the remote sensing survey and assessment project of the National Ecological Environment Decade of Change (2000-2010).