A downscaling method for a soil water content product
A soil water content and downscaling technology, applied in the field of geographic surveying and mapping, can solve problems such as low spatial resolution and insufficient spatial representation of data sets, and achieve the effects of improving calculation accuracy, high accuracy, and easy establishment
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[0043]On the basis of the prior art, the present invention utilizes the reflectance spectrum characteristics of the soil, that is, the soil water content is an important factor affecting the soil spectral reflectance, and because the soil water content has very large temporal and spatial variability, the high spatial resolution Soil spectral information can better reflect the change characteristics of soil water content in the scope of time and space, so the present invention uses the quantitative relationship between the spectral characteristics of soil and soil water content to complete the downscaling research of soil water content, which is soil water content The high spatiotemporal resolution monitoring provides a new way of thinking.
[0044] In view of the advantages of passive microwave remote sensing in global soil moisture data acquisition, a feasible spatial downscaling model is created to gradually improve the spatial resolution of soil moisture data. Through the co...
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