Satellite high-frequency monitoring can be used to quickly acquire the satellite map in 2021: in conventional projects, we take the cloud amount of satellite map less than 15% as qualified data, and under this standard, each monitoring area is expected to have 1-5 satellite map image data every month. In case of emergency disaster relief use scenario, we will provide monitoring results with maximum frequency in combination with satellite radar data (not affected by climate), and realize daily monitoring as soon as possible.
Hyperspectral satellites are rich in spectral information. On the basis of providing traditional satellite image data, we have standardized interpretation and analysis of remote sensing image data of each hyperspectral satellite, and the analysis results are displayed and provided in TIFF image format or picture format. Because the sensor type, spectral information and resolution of each hyperspectral satellite are different, the analysis results of each period are slightly different.
Through satellite high-frequency monitoring, the satellite map of 2021 is obtained once a month or even once a week,
and then the multi-phase satellite images are compared and the change map spots are extracted,
so that the changes of cities and landforms can be seen and seen accurately, which is mostly used for urban illegal construction, farmland protection,
illegal forestry logging, park monitoring, urban greening monitoring, environmental protection supervision and so on.