Joint inversion method of sea surface wind field and sea waves

A sea surface wind field and joint inversion technology, which is applied in the reflection/re-radiation of radio waves, special data processing applications, measurement devices, etc. Accurate and efficient feedback, the effect of improving accuracy

Inactive Publication Date: 2014-09-10
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0007] In order to solve the problems that the single inversion method in the prior art requires repeated input of external wind field information, consumes redu

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  • Joint inversion method of sea surface wind field and sea waves
  • Joint inversion method of sea surface wind field and sea waves
  • Joint inversion method of sea surface wind field and sea waves

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] figure 1 It is a flow chart of a method for joint inversion of sea surface wind field and ocean wave provided in the embodiment of the present invention. The embodiment of the present invention is based on the use of synthetic aperture radar technology, see figure 1 , the method includes:

[0058] S101: Perform radiometric calibration on the synthetic aperture radar image in the wind field database, and filter the calibrated image to obtain a filtered image.

[0059] Specifically, see figure 2 , the specific process of S101 includes:

[0060] S1011: performing radiometric calibration on the synthetic aperture radar image in the wind direction database,

[0061] Specifically, the radiometric calibration of synthetic aperture...

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Abstract

The invention discloses a joint inversion method of a sea surface wind field and sea waves. The joint inversion method of the sea surface wind field and the sea waves includes: performing radiometric calibration and filtration on a synthetic aperture radar image in a wind field database, splitting the image after being filtered into a plurality of subsidiary images according to preset size, and respectively calculating back scattering sections and central point incidence angles of the subsidiary images; using a man-machine interactive method to obtain external wind direction information, and obtaining the wind directions corresponding to the subsidiary images and obtaining the wind direction of the synthetic aperture radar image through interpolation calculation; processing the wind direction of the synthetic aperture radar image and the central point incidence angles so as to obtain spectrum of the sea waves, and obtaining parameters of the sea waves according to a relation between the spectrum of the sea waves and the parameters of the sea waves. The joint inversion method of the sea surface wind field and the sea waves achieves the purpose of avoiding repeating input operations of external information, can accurately and efficiently feed back the synthetic aperture radar (SAR) sea surface wind field, guarantees that the wind filed and the sea waves have the same spatial resolution, and improves accuracy of an inversion result.

Description

technical field [0001] The invention relates to the technical field of synthetic aperture radar, in particular to a method for processing joint inversion of sea surface wind field and sea wave. Background technique [0002] With the development of marine resources and frequent maritime activities, such as the development of marine transportation and sea fishing, the attention of marine accidents has also increased. Maritime accidents will bring huge disasters to the coastal countries of the world politically, economically and militarily. They will not only cause casualties and property losses, but also bring adverse effects on social development. Maritime search and rescue work is also increasingly favored by coastal countries. Therefore, it is indispensable information for people to carry out marine sports to obtain the wind field and wave conditions on the sea surface. [0003] However, the traditional observation methods of sea surface wind field and sea waves are mainly...

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Application Information

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IPC IPC(8): G06F19/00G01S13/90G06F17/30
Inventor 邵伟增孙建孙展凤
Owner ZHEJIANG OCEAN UNIV
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