Method and device for inverting sea surface salinity based on satellite-borne microwave radiometer

A spaceborne microwave and radiometer technology, which is used in measurement devices, instruments, surveying and mapping, and navigation, etc., can solve problems such as large deviations between salinity values ​​and actual salinity values.

Inactive Publication Date: 2016-07-06
NAT SATELLITE OCEAN APPL SERVICE +1
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Problems solved by technology

[0004] The inventor found in the research that the method of inverting the sea surface salinity directly through the obtained data in the prior art makes the salinity value obtained by the inversion deviate greatly from the actual salinity value

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  • Method and device for inverting sea surface salinity based on satellite-borne microwave radiometer
  • Method and device for inverting sea surface salinity based on satellite-borne microwave radiometer
  • Method and device for inverting sea surface salinity based on satellite-borne microwave radiometer

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Embodiment Construction

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0065] Aiming at the problem that the sea surface sa...

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Abstract

The invention provides a method and device for inverting sea surface salinity based on a satellite-borne microwave radiometer and relates to the field of ocean exploration. The method includes the steps that observation brightness temperature data of a waveband c and a waveband x of a target sea surface region and auxiliary data corresponding to the observation brightness temperature data are acquired respectively through the satellite-borne microwave radiometer, and the difference between the vertical polarization reflectivity of the observation c / x waveband is calculated; the difference between the vertical polarization reflectivity of the observation c / x waveband is subjected to digital image optimization, and the optimized difference between the vertical polarization reflectivity of the observation c / x waveband is obtained; the optimized difference between the vertical polarization reflectivity of the observation c / x waveband and the auxiliary data are subjected to inversion calculation through a preset lookup table, and the sea surface salinity of the target sea surface region is obtained. The calculation result of the observation brightness temperature data is optimized, the calculation result is closer to an actual value, the distribution situation of the sea surface salinity obtained through inversion of the calculation structure is more approximate to the actual value, and therefore the inversion precision of the sea surface salinity is improved.

Description

technical field [0001] The invention relates to the field of ocean detection, in particular to a method and device for retrieving sea surface salinity based on a spaceborne microwave radiometer. Background technique [0002] Sea surface salinity is one of the important parameters describing the state of the ocean. Studying its change and distribution is of great significance for analyzing the characteristics of the ocean itself and understanding the role of the ocean in the complex air-sea system. Moreover, sea surface salinity is also an important research object in other disciplines and application fields such as meteorology, ecology, hydrology and fishery. [0003] In the process of studying the sea surface salinity, it is first necessary to obtain the sea surface salinity; at present, the method of obtaining the sea surface salinity is to use the microwave radiometer that is in orbit and produces commercial products to obtain the corresponding data, and then directly use...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00
CPCG01C13/00
Inventor 王兆徽蒋兴伟宋清涛奚萌季轩梁刘宇昕
Owner NAT SATELLITE OCEAN APPL SERVICE
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