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Remote sensing soil moisture monitoring method based on STARFM fusion technology

A technology of moisture monitoring and fusion method, which is applied in remote sensing moisture monitoring, and comprehensively uses HJ satellite and MODIS data to obtain higher spatial and temporal resolution in the field of drought monitoring, which can solve the problems of low time accuracy of inversion, unsatisfactory drought monitoring results, and moisture content. Monitor the problem of low spatial resolution accuracy, and achieve the effect of improving time accuracy

Active Publication Date: 2015-02-18
江苏亨通河海科技有限公司
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Problems solved by technology

However, at present, there are few solutions for drought monitoring based on multi-satellite fusion, the time accuracy of inversion is low, the spatial resolution accuracy of moisture monitoring is not high, and the drought monitoring results are not ideal

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  • Remote sensing soil moisture monitoring method based on STARFM fusion technology
  • Remote sensing soil moisture monitoring method based on STARFM fusion technology
  • Remote sensing soil moisture monitoring method based on STARFM fusion technology

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[0035] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0036] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0037] First of all, let me introduce the basic concept of HJ star (environmental disaster reduction satellite): HJ star is a small satellite constellation launched by the country in September 2008 for environment and disaster monitoring and forecasting. There are mainly two constellations, HJ-1...

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Abstract

The invention discloses a remote sensing soil moisture monitoring method based on an STARFM fusion technology. The method mainly comprises the following steps: step 1, preprocessing CCD data of an HJ satellite according to TM and ETM data; step 2, performing pixel-by-pixel atmospheric correction on the HJ satellite by utilizing an atmospheric radiation transmission model MODTRAN4; step 3, preprocessing MODIS data; step 4, searching similar pixels, and calculating the similar pixel weight and conversion coefficient of the HJ satellite data and the MODIS data; and step 5, predicting based on an STARFM fusion algorithm. According to the STARFM fusion method, the HJ satellite data and the MODIS data are comprehensively utilized, a drought monitoring effect with high temporal-spatial resolution is achieved, the problems that single satellite MODIS data is low in spatial resolution and the HJ satellite cannot be observed day by day are solved, the inverted time resolution is improved to one day, the soil moisture monitoring spatial resolution is improved to 30 meters, and the remote sensing soil moisture monitoring method has significant application values in the fields of agriculture, water conservancy, environmental protection and ecological monitoring.

Description

technical field [0001] The invention relates to a remote sensing moisture monitoring method based on STARFM fusion technology, in particular to a drought monitoring method which comprehensively utilizes HJ star and MODIS data to obtain higher temporal and spatial resolution, and belongs to the technical field of environmental monitoring. Background technique [0002] Drought is one of the main natural disasters. Due to its large impact range, long duration, and long-lasting follow-up effects, the economic losses caused by drought far exceed other meteorological disasters. Therefore, monitor the drought situation and keep abreast of drought information It is of great significance to reduce the losses caused by drought by grasping the trend of drought and providing scientific and reasonable basis for relevant departments. [0003] Traditional drought monitoring methods mainly include soil moisture meter method, weighing method, resistance method, etc. Although they have the ad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 杨涛何祺胜师鹏飞崔同李振亚周旭东王晓燕
Owner 江苏亨通河海科技有限公司
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