Submarine topography high-resolution three-dimensional gravitation model based on Jason-1 satellite data

A gravitational model and satellite data technology, applied in the measurement of gravitational field, satellite radio beacon positioning system, geophysical measurement, etc., can solve the problems of uneven sea surface, unrelated depth research of gravitational field changes, surface gravitational bending, etc.

Inactive Publication Date: 2020-10-02
BEIBU GULF UNIV
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Problems solved by technology

[0003] The existing three-dimensional gravity technology has the following problems: the sea level is not a flat distribution, that is, the sea surface in some areas is convex, and the sea surface in some areas is concave, and the unevenness of the sea surface is mostly caused by the gravitational field. The height of the sea is related to the accumulation of material formed by the nearby huge mountains or trenches. The accumulation of this material can make its surface gravita

Method used

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Embodiment Construction

[0014] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The present invention provides a technical scheme of a high-resolution three-dimensional gravity model of seabed topography based on Jason-1 satellite data:

[0016] A high-resolution three-dimensional gravity model of seabed topography based on Jason-1 satellite data, including altimetry research on the target sea area based on Jason-1 satellite, measuring the vertical height from the satellite to sea level, and then comparing the sea surface of different topography in the target sea area The vertical height of the plane from the satellite, measuring the vertical height from the satellite to the reference ellipsoid, and then comparing the water level heights at the trenches, submarine plains and submarine mountains in the target sea area.

[0017] A hig...

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Abstract

The invention discloses a submarine topography high-resolution three-dimensional gravitation model based on Jason-1 satellite data. The method comprises the following steps: carrying out the height measurement research on a target sea area based on a Jason-1 satellite, and carrying out the site investigation on the target submarine topography based on a multi-beam echo survey system; drawing the target submarine topography according to the survey data; calculating the gravitation anomaly based on satellite height measurement data; calculating the gravitation vertical gradient based on satellite height measurement data; calculating gravitational anomaly and vertical gravitational gradient anomaly by using a model based on other measured sea areas for analysis; superposing and comparing theheight measurement data of the target sea area and the submarine topography of the target sea area; calculating the relative relation between submarine topography distribution and gravitation distribution; based on the relation between the gravitation distribution of a target sea area and the submarine topography, conveniently extending the change trend of the submarine topography through the change of the gravitational field, and otherwise, deducing the three-dimensional gravitational field model through actually measuring the submarine topography.

Description

technical field [0001] The invention belongs to the related technical field of seabed surveying and mapping, and in particular relates to a high-resolution three-dimensional gravity model of seabed topography based on Jason-1 satellite data. Background technique [0002] One of the types of marine surveying and mapping is the surveying and mapping work based on the measurement of seabed fluctuations. Seabed topographic surveys are usually carried out by echo sounders and side-scan sonars installed on ships to simultaneously measure water depth and the size and position of underwater features. According to methods such as multi-beam echo sounding system, submarine photogrammetry, airborne laser sounding and ocean remote sensing sounding, according to the distance from the coast, the positioning of each measuring point can adopt optical positioning, radio positioning, hydroacoustic positioning, satellite positioning and Combined positioning and other methods, when using diving...

Claims

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Application Information

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IPC IPC(8): G01C13/00G01V7/00G01S15/89G01S15/02G01C5/00G01S19/14
CPCG01C5/00G01C13/00G01S15/89G01S19/14G01V7/00
Inventor 董元
Owner BEIBU GULF UNIV
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