Lake transparency estimation method of MSI

The invention discloses a lake transparency estimation method based on MSI, relates to a lake transparency estimation method, and belongs to the field of satellite remote sensing and application thereof. The invention aims to solve the technical problem that the existing lake and reservoir transparency test cannot realize continuous monitoring in a large-scale range. The method comprises the following steps: estimating the transparency of the Chinese lake by adopting a normalized water-leaving reflectivity combination model of a Sentinel-2 satellite MSI sensor, wherein the normalized water-leaving reflectivity combination model is a ratio of a red edge wave band to a red wave band; and substituting the red edge wave band and the red band normalized off-water reflectivity data into the following formula, and estimating the water transparency: SDD = (rhow5/rhow4-0. 799)/(-0.134). By adopting the method, long-term high-precision monitoring of lake transparency can be realized, and the defect that continuous moni