Sea surface wind field inversion method and device

A wind field inversion and sea surface technology, which is applied in the directions of measurement devices, radio wave reflection/re-radiation, and re-radiation, can solve the problem of large error in wind speed inversion
CN107748360AInactive Publication Date: 2018-03-02ZHEJIANG OCEAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG OCEAN UNIV
Publication Date
2018-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a sea surface wind field inversion method and device and belongs to the technical field of a synthetic aperture radar. The method comprises steps that a cross polarization synthetic aperture radar (SAR) remote sensing image and European medium and long term weather forecast center (ECNWF) re-analysis wind field data are acquired; according to the acquired cross polarizationSAR remote sensing image and the ECNWF re-analysis wind field data, the corresponding relationship between a normalization backward scattering cross section value NRCS of the cross polarization SAR remote sensing image based on a radar incidence angle and the wind speed of the ECNWF re-analysis wind field data is acquired; sea surface wind field inversion is acquired according to the correspondingrelationship. The method is advantaged in that sea surface wind field inversion can be carried out without the auxiliary wind direction information, and sea surface wind field inversion of the synthetic aperture radar remote sensing image based on the cross polarization mode is realized.
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Description

technical field

[0001] The present application relates to the technical field of synthetic aperture radar, in particular to a sea surface wind field inversion method and device. Background technique

[0002] The global ocean area accounts for 71% of the earth's surface area and is an important part of global climate change. The sea surface wind speed and direction are one of the important elements of the ocean and atmosphere, and are the main driving force for the movement of the upper ocean. For marine environmental dynamics, the sea surface wind field is not only the direct driving force of sea surface waves, but also the driving force of regional and global ocean circulation. At the same time, the sea surface wind field regulates the air-sea interaction and plays an important role in global climate change. In addition, the sea surface wind field also directly affects marine operations such as marine engineering, marine fishery and maritime shipping.

[0003] The 21st ce...

Claims

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