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A Method and Device for Determining Surface Temperature Using China Fengyun-3 Satellite Remote Sensing Data

A technology based on satellite remote sensing data and Fengyun-3, which is applied in the field of remote sensing quantitative inversion, and can solve problems such as complex surface temperature inversion

Inactive Publication Date: 2020-02-21
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

The superposition of these several processes makes the inversion of surface temperature more complicated

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  • A Method and Device for Determining Surface Temperature Using China Fengyun-3 Satellite Remote Sensing Data
  • A Method and Device for Determining Surface Temperature Using China Fengyun-3 Satellite Remote Sensing Data
  • A Method and Device for Determining Surface Temperature Using China Fengyun-3 Satellite Remote Sensing Data

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specific Embodiment

[0053] Such as figure 1 Shown, specific embodiment of the present invention is as follows:

[0054] A method for determining the surface temperature using the remote sensing data of the China Fengyun-3 satellite, the implementation steps are as follows:

[0055] Step (A), using the visible light and near-infrared observation data of Fengyun-3 satellite to determine the surface emissivity, the implementation method is as follows:

[0056] A1. Calculate the NDVI values ​​of all pixels in a scene image according to formula (1);

[0057] A2. When the NDVI value of the pixel in the image satisfies NDVI<0.2, calculate the surface emissivity values ​​of the 4th and 5th channels of Fengyun-3 satellite in the bare soil area according to formula (2) and formula (3) respectively;

[0058] A3. When the NDVI value of the pixel in the image satisfies NDVI>0.5, calculate the surface emissivity values ​​of the 4th and 5th channels of the Fengyun-3 satellite in the vegetation area according ...

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Abstract

The invention discloses a method and device for determining the surface temperature by using the remote sensing data of the China Fengyun No. 3 satellite, including: step (A), using the visible light and near-infrared channel data of the China Fengyun No. 3 satellite, combined with the developed surface emissivity to determine Method obtains surface emissivity; Step (B), utilizes China Fengyun No. 3 satellite thermal infrared channel data, in conjunction with the covariance and variance ratio method of development, determines atmospheric precipitable water vapor content; Step (C), utilizes step (A) and step (B) The obtained surface emissivity and atmospheric precipitable water vapor content, combined with the developed surface temperature remote sensing inversion method, directly retrieve the surface temperature from the thermal infrared channel data observed by the Fengyun-3 satellite. The invention effectively realizes the quantitative remote sensing inversion of the surface temperature of the China Fengyun-3 satellite data.

Description

technical field [0001] The invention belongs to the technical field of remote sensing quantitative inversion, in particular to a method and a device for determining the surface temperature by using the remote sensing data of China Fengyun-3 satellite. 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] Fengyun-3 (FY-3) meteorological satellite is a new generation of polar-orbiting meteorologic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G01J5/00
CPCG01J5/007G06V20/13
Inventor 唐伯惠
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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