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Urban surface temperature inversion method based on ASRER data

A surface temperature and data technology, applied in the field of urban surface temperature inversion based on ASRER data, can solve the problems of complex logic structure and low inversion accuracy, and achieve the effects of low acquisition cost, high signal-to-noise ratio, and good current situation.

Pending Publication Date: 2022-04-12
浙江大学德清先进技术与产业研究院 +1
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Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a method for inversion of urban surface temperature based on ASRER data, aiming to solve the problems of low inversion accuracy and complex logic structure of existing similar algorithm technology

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  • Urban surface temperature inversion method based on ASRER data
  • Urban surface temperature inversion method based on ASRER data
  • Urban surface temperature inversion method based on ASRER data

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Embodiment Construction

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, a method for inversion of urban surface temperature based on ASRER data of the present invention will be further described in detail through the following examples and in conjunction with the accompanying drawings.

[0051] figure 1 It is a flow chart of a method for inversion of urban surface temperature based on ASRER data, which mainly includes the following steps:

[0052] 1) Step 1: Calculate the atmospheric water vapor content w: Calculate the atmospheric water vapor content w using the MODIS remote sensing data of the same period. The calculation formula is as follows:

[0053] w=((0.02-ln(b19 / b2)) / 0.651)²

[0054] Among them, b19 and b2 correspond to the radiation gray value corresponding to the 19th band and the 2nd band in the MODIS data;

[0055] 2) Step 2: Calculate the atmospheric transmittance t13 and t1 corresponding to the two thermal infrared bands of th...

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Abstract

The invention provides a city surface temperature inversion method based on ASRER data. The method comprises the following steps: step 1, calculating an atmospheric water vapor content w value; step 2, calculating atmospheric transmissivity t13 and t14 corresponding to two thermal infrared bands of the ASRER data; step 3, calculating earth surface emissivity y13 and y14 corresponding to two thermal infrared bands of the ASRER data; 4, performing inversion calculation on the surface temperature Ts; and step 5, on the basis of completing the steps 1 to 4, substituting results obtained by calculation of the parameters into an inversion formula to calculate a surface temperature value. According to the method, through different algorithm ideas, the algorithm technology for inverting the surface temperature by using the ASRER data is improved and promoted, and the precision of inverting the surface temperature by using the thermal infrared band of the ASRER data is improved; the algorithm technology can be well understood and mastered through the simple and direct logic relation and the algorithm thought of the invention, so that the algorithm technology can be widely applied.

Description

technical field [0001] The invention belongs to the technical field of remote sensing images for earth observation, in particular to a method for inversion of urban surface temperature based on ASRER data. Background technique [0002] With the continuous development of remote sensing imagery and earth observation technology, the inversion and monitoring of surface temperature can be realized through satellite sensors equipped with thermal infrared cameras. Since the 1980s and 1990s, remote sensing technicians have done many researches, and the algorithm of remote sensing retrieval of surface temperature has been widely used; so far, the algorithm of remote sensing retrieval of surface temperature has roughly formed three types: single-channel, dual-channel and multi-angle inversion algorithm. The dual-channel (split window) inversion algorithm has been widely used and studied in the inversion of remote sensing land surface temperature. The single-channel surface temperatu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00
Inventor 李德贵尚永衡陈钢沈正伟尹建伟程卓
Owner 浙江大学德清先进技术与产业研究院
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