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Method and apparatus for determining surface temperature by use of middle-infrared remote sensing data

A technology of surface temperature and remote sensing data, applied in the field of remote sensing quantitative inversion, can solve problems such as difficulties in surface temperature

Inactive Publication Date: 2016-03-23
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

However, there is currently no method to effectively separate reflected and emitted radiation from mid-infrared remote sensing data during the day, making it very difficult to determine land surface temperature using mid-infrared remote sensing data

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specific Embodiment

[0040] Such as figure 1 Shown, specific embodiment of the present invention is as follows:

[0041] A method for determining the surface temperature using mid-infrared remote sensing data, the implementation steps are as follows:

[0042] Step (A), using the radiance data and atmospheric parameter data of the 22nd (3.929μm–3.989μm) and 23rd (4.020μm–4.080μm) channels in the mid-infrared spectral region of the MODIS data of the medium-resolution imaging spectrometer, combined with the mid-infrared surface bidirectional Albedo inversion method to determine the two-way albedo of the surface for channels 22 and 23. This step is mainly realized through the surface two-way reflectivity inversion module, and the implementation method is as follows:

[0043] A.1 Surface brightness temperature without contribution from direct solar radiation determination of

[0044] Under the assumption that the two-way surface reflectance of the 22nd and 23rd channels of MODIS is equal, and the ...

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Abstract

The invention discloses a method and apparatus for determining a surface temperature by use of middle-infrared remote sensing data. The method comprises the following steps: step A, determining surface bidirectional reflectivity of a twenty-second channel (3.929[mu]m to 3.989[mu]m) and a twenty-third channel (4.020[mu]m to 4.080[mu]m) by use of radiation brightness data and atmosphere parameter data of the twenty-second channel and the twenty-third channel of a middle-infrared wave spectrum zone of moderate-resolution imaging spectroradiometer (MODIS) data through a developed middle-infrared surface bidirectional reflectivity remote sensing inversion method; step B, by use of the surface bidirectional reflectivity obtained from the step A, through a developed surface direction ratio radiant ratio remote sensing inversion method, determining surface direction ratio radiance; and step C, by use of the middle-infrared surface bidirectional reflectivity and the direction ratio radiance respectively obtained from the step A and the step B, through a developed surface temperature remote sensing reversion method, determining the surface temperature. The method and apparatus provided by the invention effectively realize quantitative remote sensing inversion of the surface temperature through the middle-infrared data.

Description

technical field [0001] The invention belongs to the technical field of remote sensing quantitative inversion, in particular to a method and device for determining the surface temperature by using mid-infrared remote sensing data. Background technique [0002] Surface temperature plays a very important role in the process of land-atmosphere interaction. It is one of the key parameters in the study of global change. It is of great significance to the research of hydrology, ecology, environment and biogeochemistry. Calculation of thermal inertia and other aspects also have important application value. Quantitative remote sensing inversion of surface temperature plays a very important role in promoting drought forecasting and crop water shortage research, crop yield estimation, numerical weather prediction, global climate change, and global carbon balance. [0003] So far, satellite sensors have obtained decades (since 1978) mid-infrared (3-5μm spectral region) remote sensing d...

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Application Information

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IPC IPC(8): G01S17/95G01S7/48
CPCG01S7/48G01S17/95Y02A90/10
Inventor 唐伯惠李召良
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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