The data source uses the Sentinel 2 optical satellite L2 product, with 4 bands (red, green, blue, and near-red) and a resolution of 10 meters. The data comes from the ESA website, and a total of 28150 scenes have been downloaded.

First, a working grid covering the entire Xinjiang is made, with a grid size of 5KM × 5KM. The grid is used to cut the downloaded landscape data across Xinjiang, and more than 12 million pieces of grid cut data are obtained. A deep learning model is used to select each month. The grid cut data with the best quality and the least cloud amount is spliced into a monthly product covering the entire Xinjiang.

The data production meets the technical standard requirements of China's national standard "CH/Z1044 -2018 Technical Regulations for Quality Inspection of Optical Satellite Remote Sensing Images." The overall image has uniform color, clear texture, clear details, clear topography, and clear terrain; The image is required to be seamlessly inlaid, with natural transition at the junction, and no color mutations; the merged image must retain the spectral and color information of the original multispectral data. The data meets technical requirements.