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Sea wave surface reduction method

A technology of wave surface and wave height, applied in the field of sea surface wave surface restoration, can solve the problems that cannot reflect the real situation of the sea surface and cannot invert the relative wave height

Inactive Publication Date: 2010-04-21
WUHAN UNIV OF TECH
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Problems solved by technology

However, both of the above two methods invert the two-dimensional ocean wave spectrum in the frequency domain and obtain the effective wave height representing the characteristic parameters of a wide range of ocean waves, so neither of the above methods can invert a specific pixel of the sea surface in the time domain The relative wave height of the point, the restored sea surface is a two-dimensional scene, which cannot reflect the real situation of the sea surface

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Embodiment Construction

[0023] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. In this embodiment, the sea surface wave surface restoration method uses the multi-polarization tilt modulation algorithm and the sea surface wind inversion geophysical function to obtain the azimuth and range slopes according to the HH polarization image and VV polarization image of the object area, so as to invert the specific pixels of the sea surface The relative wave height of the point, and then restore the three-dimensional scene of the sea surface wave surface, which can reflect the real situation of the sea surface. It will be elaborated below.

[0024] figure 1 It is a flow chart of the sea surface wave surface restoration method in this embodiment. As shown in the figure, the sea surface wave surface reduction method includes the following steps:

[0025] Step S11, select the inversion object area, and obtain ...

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Abstract

The invention discloses a sea wave surface reduction method comprising the following steps: (1) selecting an inversion object region; acquiring an HH polarization image and a VV polarization image of the object region; (2) on the basis of a multipolar inclination modulation algorithm, inverting directional slopes corresponding to various pixels according to the parameters of the HH polarization image and the VV polarization image; (3) utilizing sea surface wind to invert a geophysical function so as to correct the distancing slopes of the HH polarization image and the VV polarization image; (4) inverting the relative wave heights of various pixels according to the directional slopes and the distancing slopes; and (5) reducing a three-dimensional sea wave surface according to the relative wave heights. The sea wave surface reduction method can invert the relative wave heights of concrete pixels on a sea surface, reduce a three-dimensional scene of the sea wave surface and reflect the true conditions of the sea surface.

Description

technical field [0001] The invention relates to the technical field of marine environment monitoring, in particular to a sea surface wave surface restoration method. Background technique [0002] The ocean plays an extremely important role in the history of human civilization development and is a basic component of the global life support system. The relationship between the marine environment and human beings is very close, so the detection of the marine environment is particularly important. At present, the detection of the marine environment mostly uses the sea surface wave surface restoration technology. [0003] An existing ocean wave surface restoration technology uses a single-polarization SAR (Synthetic Aperture Radar, synthetic aperture radar) image to invert the wave spectrum of the imaged sea surface, and restores the sea surface wave surface through the inverted wave spectrum. However, the inversion technique relies on the first guess spectrum, that is, the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/89
Inventor 谢涛陈伟旷海兰
Owner WUHAN UNIV OF TECH
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