Shallow sea water depth multi-spectral satellite remote sensing inversion method in waterless depth control point area

A satellite remote sensing and bathymetric inversion technology, applied in the field of satellite ocean remote sensing applications, can solve the problems of unreliable bathymetric inversion results, inability to carry out shallow water depth remote sensing inversion, and lack of bathymetry control points, and achieves the goal of eliminating the influence of bathymetry inversion. Effect

Active Publication Date: 2018-12-21
THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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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 r

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  • Shallow sea water depth multi-spectral satellite remote sensing inversion method in waterless depth control point area
  • Shallow sea water depth multi-spectral satellite remote sensing inversion method in waterless depth control point area
  • Shallow sea water depth multi-spectral satellite remote sensing inversion method in waterless depth control point area

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Embodiment Construction

[0026] The invention aims at water depth multi-spectral satellite remote sensing in areas without water depth points, and obtains relevant parameters required for water depth inversion through the image itself, thereby realizing remote sensing inversion of shallow sea water depth in areas without water depth points.

[0027] Below in conjunction with accompanying drawing and embodiment, describe the specific implementation process of technical scheme of the present invention in detail:

[0028] Step 1: Acquire high-resolution multispectral satellite images of the study area, carry out atmospheric correction to obtain albedo images, and convert albedo data into underwater remote sensing albedo data r w . When the positioning error of the satellite image is less than 6m, the geometric correction process needs to be carried out first; when there is obvious flare interference in the image, the flare correction process needs to be carried out;

[0029] Step 2: Through visual inter...

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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...

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Application Information

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IPC IPC(8): G01B11/22
CPCG01B11/22
Inventor 陈本清杨燕明
Owner THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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