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Method for estimating average soil water content and interlayer soil water content

A technology of soil water content and measurement methods, which is applied to measurement devices, geophysical measurements, radio wave measurement systems, etc., to achieve the effect of repeated acquisition

Inactive Publication Date: 2017-05-31
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

[0012] For this reason the present invention provides a kind of method that utilizes ground penetrating radar thick root reflection to estimate average soil water content and interlayer soil water content, and this method can solve the problem mentioned above

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  • Method for estimating average soil water content and interlayer soil water content
  • Method for estimating average soil water content and interlayer soil water content
  • Method for estimating average soil water content and interlayer soil water content

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Embodiment Construction

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific implementations of the present invention are now described. But those skilled in the art should know that the following examples are not the sole limitation to the technical solution of the present invention, and any equivalent transformation or modification made under the spirit of the technical solution of the present invention should be considered as belonging to the protection of the present invention scope.

[0039] figure 1 It is a schematic flow sheet of the method for estimating average soil water content and interlayer soil water content using ground penetrating radar thick root reflection data according to a specific embodiment of the present invention; figure 1 As shown, the principle of the method for estimating average soil moisture content and interlayer soil moisture content using ground penetrating radar thick root reflection data ...

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Abstract

The invention provides a method for estimating average soil water content and interlayer soil water content. The method comprises the following four steps: (1) acquiring thick root reflection data by a ground penetrating radar measuring way with a fixed receiving-transmitting antenna interval; (2) extracting an average wave speed from a thick root dual-curve signal by using a dual-curve automatic recognition algorithm based on RHT (Randomized Hough Transformation); (3) calculating an interlayer wave speed based on the average wave speed acquired in the step (2); (4) converting the obtained average wave speed and interlayer wave speed into the soil water content. In the method, a plant root system is taken as a reflector for estimating the soil water content, so that accurate acquisition of the average wave speed and the interlayer wave speed is realized under the condition that thick root depth information is unknown. A feasible method is provided for rapid and nondestructive acquisition of the horizontal distribution and vertical change condition of the soil water content, and has important significance to research of an interaction relationship between the plant root system and soil.

Description

technical field [0001] The invention relates to a processing method of a ground penetrating radar image, in particular to a process of automatically identifying a hyperbola on a radar image and obtaining an average wave velocity by using an RHT-based hyperbola automatic identification algorithm, which belongs to the field of image processing. Background technique [0002] Soil water content (SWC) is one of the important properties of soil and a key variable in understanding the formation of natural ecosystems and biodiversity. Soil water content is also an important link in the water cycle. It controls the exchange of energy and water between the ground and the atmosphere, and affects the hydrological processes such as soil water infiltration, seepage, and redistribution. In addition, soil water content is a key factor in the fine management of agriculture, highway maintenance and atmospheric hydrological model research. [0003] Due to the high temporal and spatial variabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12G01V3/38
CPCG01S7/411G01S7/414G01S7/418G01S13/885G01S13/89G01V3/12G01V3/38Y02A90/30
Inventor 崔喜红刘新波陈晋陈学泓曹鑫
Owner BEIJING NORMAL UNIVERSITY
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