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HY-2 satellite scatterometer sea surface wind field retrieval method and device

A technology of Ocean No. 2 and scatterometer, which is applied to measurement devices, uses re-radiation, reflection/re-radiation of radio waves, etc. It can solve the problems of 180° blurring, cannot achieve blur solution removal well, and improve accuracy. sexual effect

Inactive Publication Date: 2014-04-02
NAT SATELLITE OCEAN APPL SERVICE
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Problems solved by technology

Under normal circumstances, the above conditions can be satisfied, but under the influence of rainfall, etc., the initial field of the scatterometer fuzzy solution usually has a patchy 180° blur. In this case, the circular median filter algorithm cannot be compared. Good to achieve the effect of fuzzy solution removal

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  • HY-2 satellite scatterometer sea surface wind field retrieval method and device
  • HY-2 satellite scatterometer sea surface wind field retrieval method and device
  • HY-2 satellite scatterometer sea surface wind field retrieval method and device

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Embodiment Construction

[0019] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0020] Aiming at the disadvantages of the traditional circular median filtering fuzzy solution removal algorithm, which requires high accuracy of the initial field and cannot remove patchy blur, the embodiment of the present invention designs a more accurate fuzzy solution removal algorithm, which is applied to the sea surface wind of the satellite scatterometer. In the process of field inversion, it can meet the requirements of ambiguity removal required for scatterometer wind field inversion under various complex conditions. Based on this, an embodiment of the present invention provides a sea surface wind field inversion method and device of the Haiyang No. 2 satellite scatterometer, which will be described below through an embodiment.

[0021] see figure 1 The flow chart of the Haiyang-2 satellite scatterometer...

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Abstract

The invention provides an HY-2 satellite scatterometer sea surface wind field retrieval method and device. The method comprises the steps of building a physical geography module function; setting a target function based on the physical geography module function; searching for the local maximal wind speed and wind direction of the target function for each wind vector unit, and taking the obtained wind speed and wind direction as ambiguity solutions of the current wind vector unit; selecting ambiguity solutions corresponding to two maximal target values from the ambiguity solutions of the current wind vector unit, respectively comparing the two ambiguity solutions with an NCEP (National Centers for Environmental Prediction) forecast wind direction, and taking the ambiguity solution which is closest to the NCEP forecast wind direction as the initial field of the current wind vector unit in the comparative results; taking initial fields of all wind vector units as an ambiguity solution initial field of circle median filter, and performing ambiguity solution removal operation to obtain real data of a sea surface wind field. The HY-2 satellite scatterometer sea surface wind field retrieval method and device are adaptive to the requirements of ambiguity solution removal needed by the scatterometer wind field inversion under various complex environmental conditions, and the forecast accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of marine microwave remote sensing, in particular to a sea surface wind field inversion method and device of the Ocean No. 2 satellite scatterometer. Background technique [0002] The ocean surface wind field is an active factor affecting waves, currents, and water masses, and a basic parameter of ocean dynamics. The monitoring of the global ocean wind field is used in disaster prevention and mitigation in coastal areas, marine environmental protection, and promotion of ocean-related scientific research. is of great significance. Satellite scatterometers have become the most important means of observation of global sea surface wind fields due to their characteristics of all-day, all-weather, high spatial-temporal resolution, and large coverage. [0003] A satellite scatterometer is a calibrated radar that actively transmits electromagnetic waves to the sea surface and receives echo signals modulated by the ...

Claims

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Application Information

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IPC IPC(8): G01S7/02
CPCG01S7/02G01S13/95
Inventor 邹巨洪林明森邹斌黄磊张治平
Owner NAT SATELLITE OCEAN APPL SERVICE
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