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A Prediction Method of Soil Water Content Based on Spectral Angle

A technology of soil water content and prediction method, which is applied in the field of soil water content prediction, can solve the problems of not paying attention to interference, etc., and achieve the effect of improving prediction efficiency and accuracy, improving prediction accuracy, and reducing interference

Active Publication Date: 2020-12-29
JINLING INST OF TECH
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Problems solved by technology

Most of the existing research regards soil moisture as an interference factor that interferes with the prediction of other soil properties and eliminates it, and does not pay attention to the interference of other soil properties in soil moisture prediction

Method used

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  • A Prediction Method of Soil Water Content Based on Spectral Angle
  • A Prediction Method of Soil Water Content Based on Spectral Angle
  • A Prediction Method of Soil Water Content Based on Spectral Angle

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] The present invention designs a soil water content prediction method based on spectral angles, which is used to realize the soil water content prediction of the soil to be detected in the target soil area. In practical applications, firstly, the following steps A to D are performed to obtain the target soil area. Corresponding soil moisture prediction model.

[0041]Step A. According to the existing soil data corresponding to the target soil area, extract the original soil spectra of soil samples from the target soil area corresponding to different soil water contents, and the corresponding different soil water contents cover the target soil area The water content below the air-dried soil water content, and the range covering the air-dried soil water content to the saturated soil water content in the target soil a...

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Abstract

The invention relates to a method for predicting soil moisture content based on spectral angle. It adopts a new design idea, applies existing soil data for analysis and processing, and obtains the corresponding spectral angle of the soil, and then applies the data fitting method to obtain the spectral angle and soil moisture content. The fitting function between the water amounts is used as the soil moisture prediction model corresponding to the target soil area, and is applied in practice, and finally realizes the prediction of the soil moisture content of the soil to be tested in the target soil area; effectively avoiding the existing soil moisture prediction In the model, the soil moisture spectral response band will be removed due to the influence of water vapor in the atmosphere, which affects the stability of the shortcomings, eliminates or weakens the interference of other soil attributes on the soil moisture spectral information, and efficiently realizes the prediction of soil moisture content, to a certain extent It improves the prediction accuracy of soil water content based on visible-near-infrared spectral data, improves the prediction efficiency and accuracy of soil water content, and has the potential for popularization and application.

Description

technical field [0001] The invention relates to a method for predicting soil water content based on spectral angles, and belongs to the technical field of soil water content prediction. Background technique [0002] Soil water content is one of the important attribute information of soil. It is not only a necessary condition for plant growth and development, but also has important significance for heat balance, soil temperature, and agricultural moisture. In recent years, with the rapid development of precision agriculture, the rapid and accurate acquisition of soil water content information has received more and more attention. Hyperspectral technology is favored by more and more researchers at home and abroad for its advantages of fast, non-destructive, economical and accurate, so it is widely used in the rapid acquisition of soil water content information. [0003] At present, scholars at home and abroad mainly use the following three methods to predict soil water conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06F17/15
CPCG01N21/25G06F17/15
Inventor 刘娅
Owner JINLING INST OF TECH
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