6 results about "Satellite remote sensing" patented technology

The invention discloses a remote sensing earth surface temperature up-scaling method and a system, and relates to the technical field of satellite remote sensing. According to the invention, a first scale remote sensing image is fully used for calculating a normalized difference vegetation index sensitive to the earth surface temperature, by building a non-linear model between the normalized difference vegetation index and the earth surface temperature and using earth surface evaluated temperature difference of the normalized difference vegetation index under two scales, error correction to up-scaled earth surface temperature is achieved, and errors caused during up-scaling of the earth surface temperature are reduced.

The invention provides a vegetation coverage inversion method based on combination of multi-source remote sensing data and geographical partition data. The method comprises the following steps: obtaining multi-spectral band surface reflectance data based on medium-resolution satellite remote sensing data; obtaining vegetation and non-vegetation classification data based on the high-resolution remote sensing data; calculating the classification data to obtain a vegetation coverage sample; constructing a random forest inversion model based on ecological partition by using the vegetation coverage sample and the surface reflectance data; and based on the inversion model, carrying out vegetation coverage inversion on the surface reflectance data in the ecological partition to obtain the vegetation coverage of the split scene. The invention also correspondingly provides a system. According to the method, the vegetation coverage inversion precision and the data production efficiency can be improved by establishing a model for each ecological partition.

The invention provides a safe power utilization management method and system based on edge calculation and big data analysis, and the method comprises the steps: determining whether a power grid is in a power supply saturation state or not through collecting and analyzing the real-time charging state big data of a charging pile, adaptively adjusting the charging state of each charging pile for each charging load, and improving the safety of power utilization. Power supply safety accidents caused by power supply overload of the power grid are avoided; besides, edge calculation and analysis are carried out on satellite remote sensing images of the areas where the charging piles are located so as to determine the rainfall trend of the corresponding areas and control the allowable charging time of each charging pile, and when rainfall weather occurs, ground area images of the areas where the charging piles are located are collected and analyzed so as to determine the accumulated water depth of the areas. In this way, continuous and stable power supply of a power grid in a charging pile site is guaranteed, electric leakage accidents caused by rainstorm weather in the charging pile site are avoided, and therefore the electricity utilization safety of the charging pile site is improved.