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Convenient and simple remote-sensing soil moisture monitoring method

A soil moisture and remote sensing technology, which is applied in the direction of measuring devices, analyzing materials, and material analysis through optical means, can solve the problems of calculating soil moisture content, such as large calculation amount and complicated processing process, so as to achieve less pre-processing process and less calculation amount The effect of small, guaranteed accuracy

Inactive Publication Date: 2017-03-22
TIANJIN UNIV
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a simple remote sensing soil moisture monitoring method, which overcomes the problems in the prior art that the calculation of soil moisture content is large and the pre-processing process is complicated

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  • Convenient and simple remote-sensing soil moisture monitoring method
  • Convenient and simple remote-sensing soil moisture monitoring method
  • Convenient and simple remote-sensing soil moisture monitoring method

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] The related technology of the present invention—the linear regression analysis model, is widely used when studying the correlation between two variables. Analyzing the relationship between MODIS 7th band surface reflectance data and field observation soil moisture data, it is found that the values ​​of the 7 observation points are basically fluctuating near the fitting line, so it can be considered that the relationship between the two is basically a linear negative correlation. The deviation of these points from the straight line is caused by all other uncertain factors. According to the linear correlation between the seventh band and the soil moisture content, the regression equation can be assumed:

[0015] Y=β 0 +β 1 X+ε (1)

[0016] is a linear model equation, where β 0 +β 1 X represents the part of soil moisture Y that chang...

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Abstract

The invention discloses a convenient and simple remote-sensing soil moisture monitoring method which comprises the following steps: firstly determining required data and an experiment area; extracting seventh band reflectivity data corresponding to each experiment point in a research area, choosing measured data, identical with the transit time of satellite data, from surface observation data, utilizing statistical software to perform regression analysis on the satellite seventh band reflectivity data and measured surface soil moisture data to obtain an optimal regression model, performing significance test on a regression equation, and determining a model equation for inverting soil moisture. By means of utilizing a single band to calculate the soil moisture content, the method has the characteristics of smaller calculated amount and fewer required early-stage processing procedures, guarantees the accuracy of monitoring results based on greatly simplifying data collection and preprocessing in the early stage, and is suitable for calculating the soil moisture content in a large scale.

Description

technical field [0001] The invention relates to a soil moisture monitoring method, which is a simple soil moisture monitoring method based on remote sensing data. Background technique [0002] Soil moisture is an important characterization parameter for soil degradation or drought, and an important indicator for measuring the degree of drought in the fields of climate, hydrology, ecology, agriculture, etc. It is an important factor affecting global climate and environmental changes. Therefore, understanding the size and condition of soil moisture has very important practical significance in land planning and management, as well as in agricultural and animal husbandry production. Remote sensing soil moisture inversion is a method of monitoring soil moisture. Large-scale soil moisture monitoring is an important part of agricultural process research and environmental factor evaluation, and regional-scale or even global soil-water environment inversion is a land process model. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3554
CPCG01N21/3554
Inventor 柴立和拉珍
Owner TIANJIN UNIV
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