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Sea surface salinity retrieval method and device

A sea surface temperature and inversion technology, applied in the field of data calculation, can solve the problems of inability to collect sea surface salinity inversion data, inaccurate sea surface salinity inversion results, etc.

Inactive Publication Date: 2016-07-13
NAT SPACE SCI CENT CAS +1
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Problems solved by technology

[0004] In the process of inversion calculation of the multivariate nonlinearity of sea surface salinity through the SMOS project or the Aquarius project, the SMOS project only carries the L-band two-dimensional synthetic aperture microwave radiometer, while the Aquarius project uses the L-band real aperture microwave radiometer Both the scatterometer and the scatterometer cannot collect more sea surface salinity inversion data, so in the process of inversion calculation of the multivariate nonlinearity of the sea surface salinity, only a large amount of predicted data can be used, which will lead to the sea surface salinity The inversion result is not accurate

Method used

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  • Sea surface salinity retrieval method and device
  • Sea surface salinity retrieval method and device

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Embodiment 1

[0056] This embodiment provides a sea surface salinity inversion method, and the execution subject of the embodiment of the present invention is a simulation computing system including a server and a data acquisition device. Among them, in the simulation computing system, the server and the data acquisition equipment perform data interaction, and the data acquisition equipment includes but not limited to: L-band microwave radiometer, C-band microwave radiometer, K-band microwave radiometer and L-band scatterometer, used to Collect the multi-incidence angle brightness temperature measurement values ​​and the L-band backscatter coefficient measurement values ​​under the L-band, C-band and K-band of the ionosphere above the atmosphere; the server will obtain the above data collected by the data acquisition equipment, And carry out inversion calculation together with the multi-incidence angle brightness temperature simulation value of the ionosphere above the lower atmosphere in th...

Embodiment 2

[0092] see figure 2 , this embodiment provides a sea surface salinity inversion device for performing the above sea surface salinity inversion method, including:

[0093] The analog value processing module 200 is used to simulate the brightness temperature of the top of the atmosphere, and obtain the multi-incident angle brightness temperature simulation value and the L-band Simulated value of backscatter coefficient;

[0094] The measured value processing module 202 is used to obtain the L-band, C-band and K-band multiple data of the ionosphere above the atmosphere respectively through the preset L-band, C-band and K-band microwave radiometer and L-band scatterometer. The measured value of the brightness temperature at the incident angle and the measured value of the L-band backscattering coefficient;

[0095] The sea surface inversion parameter calculation module 204 is used to obtain the measured values ​​of brightness temperature at multiple incident angles and the meas...

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Abstract

The invention provides a sea surface salinity retrieval method and a sea surface salinity retrieval device. The sea surface salinity retrieval method comprises the following steps: simulating atmosphere top brightness temperature so as to acquire a multi-incident angle brightness temperature simulation value of an ionopause above the atmosphere layer at an L wave band, a C wave band and a K wave band of a preset multi-angle radiation model, and a backscatter coefficient simulation value of the L wave band; respectively acquiring a multi-incident angle brightness temperature measuring value of the ionopause above the atmosphere layer at the L wave band, the C wave band and the K wave band, and a backscatter coefficient measuring value of the L wave band; performing sea surface salinity retrieval calculation according to the simulated multi-incident angle brightness temperature simulation value and the backscatter coefficient simulation value of the L wave band, and the acquired multi-incident angle brightness temperature measuring value and the backscatter coefficient measuring value of the L wave band. By adopting the sea surface salinity retrieval method, the accuracy rate of the retrieval calculation result can be improved.

Description

technical field [0001] The invention relates to the field of data calculation, in particular to a sea surface salinity inversion method and device. Background technique [0002] At present, sea surface salinity refers to a scale of salinity in the surface of seawater, and is a basic parameter for studying the physical and chemical processes of seawater. Many phenomena and processes in the ocean are often related to the distribution and change of salinity. Therefore, the study of the distribution and change law of sea surface salinity occupies an important position in marine science. [0003] In related technologies, through the SMOS satellite-based multi-incident angle brightness temperature sea surface salinity retrieval algorithm (referred to as the SMOS project) and the AquariusJPLCAP (Combined Active-Passive) v3.0 active-passive joint inversion algorithm (referred to as the Aquarius project), the sea surface The multivariate nonlinear inversion of salinity is carried ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 殷晓斌徐星欧周武黄磊安文涛
Owner NAT SPACE SCI CENT CAS
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