Multispectral Satellite Remote Sensing Retrieval Method for Shallow Water Depth in Areas Without Water Depth Control Points

Abstract

The invention discloses a shallow sea water depth multi-spectral satellite remote sensing inversion method in a waterless depth control point area, and belongs to the technical field of the satelliteocean remote sensing application. Based on a derived dual-band linear shallow sea water depth inversion model, solving an optimal band rotation unit vector through different depths of different submarine types of pixel points dataset, estimating subsea parameters in the model based on a typical substrate type pixel adoption of a position of a land and water boundary line, calculating a blue-greenband diffusion attenuation coefficient ratio and based on deep water area data closest to a shallow sea area through the same type of substrate and different depths of pixel data, and calculating thegreen band attenuation coefficient based on a semi-analytic and diffuse attenuation coefficient algorithm. According to the shallow sea water depth multi-spectral satellite remote sensing inversion method in the waterless depth control point area, the shallow sea water depth remote sensing inversion in the waterless depth control point area is realized through the calculation of the above parameters.

Description

technical field [0001] The invention belongs to the technical field of satellite ocean remote sensing applications, and in particular relates to a multi-spectral satellite remote sensing inversion method for shallow water depth in an area without a water depth control point. Background technique [0002] Shallow sea depth, as an important parameter for the safe navigation of ships and the study of nearshore ecosystems and optics, has always been an important content of oceanographic mapping and optical remote sensing. Conventional shallow water bathymetry is mainly shipborne multi-beam / single-beam acoustic measurement, and the airborne laser bathymetry technology developed in recent years has gradually been widely used. But for some dangerous or disputed sea areas, these technical means are time-consuming and labor-intensive, or even impossible. Although the depth and accuracy of detection cannot yet replace conventional oceanographic surveys, satellite remote sensing techn...

AI Technical Summary

Problems solved by technology

For some remote, dangerous or controversial places, there are actually few measured sounding points, and the sounding inversion results are not reliable, and sometimes there are even no available sounding control points, and shallow water depth remote sensing inversion cannot be carried out

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