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Litter layer transmittance measuring device and measuring method

A technology of litter and measuring device, which is applied in the directions of measuring device, optical radiation measurement, radiation pyrometry, etc., can solve the problem that the transmittance of litter layer has not been reported, and achieves easy calculation method, simple operation, simple structure

Inactive Publication Date: 2016-10-26
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] At present, there is no report on the transmittance of the litter layer

Method used

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  • Litter layer transmittance measuring device and measuring method
  • Litter layer transmittance measuring device and measuring method
  • Litter layer transmittance measuring device and measuring method

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] like figure 1 As shown, a device for measuring the transmittance of the litter layer of the present invention mainly includes: a storage battery 1 , a microwave radiometer 2 , a sample chamber 3 , a lifting platform 4 , and a data terminal 5 . The battery 1 is connected to the microwave radiometer 2 and the lifting platform 4 respectively, and the battery 1 is used as the power supply of the microwave radiometer 2 and the lifting platform 4, and is used to supply power to the microwave radiometer 2 and the lifting platform 4; the sample chamber 3 is installed on the lifting platform 4 , the height of the sample chamber 3 is controlled by the lifting table 4, thereby controlling the height of the sample in the sample chamber 3; the horn antenna of the microwave radiometer 2 is placed directly below the sample chamber 3, and the horn antenna port of the ...

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Abstract

The invention provides a litter layer transmittance measuring device and measuring method, relating to the microwave radiation characteristic measuring field, and fills the blank of litter layer transmittance measurement. The measuring device comprises an accumulator, a microwave radiometer, a sample room, a lifting platform and a data terminal. The horn antenna of the microwave radiometer is placed directly under the sample room, and the port of the horn antenna is vertically upward. The microwave radiometer measures a sample in the sample room to obtain the microwave radiation brightness temperature of the sample, and thereby calculates the transmittance of the sample; the data terminal and the microwave radiometer perform data communication to record the measuring data of the microwave radiometer in real time. The litter layer transmittance measuring device and measuring method have the characteristics of simple operation and easy calculation, are suitable for multifrequency, meanwhile can realize measurement high precision and high efficiency, and can effectively measure the transmittance of litter layers with different thickness and water contents.

Description

technical field [0001] The invention relates to the technical field of microwave radiation characteristic measurement, in particular to a measuring device and a measuring method for the transmittance of a litter layer. Background technique [0002] One-third of the earth's land is covered by forests, and the parameters of soil moisture and snow cover under forests are key parameters for the interaction between land and the atmosphere, which have a certain feedback effect on climate change. In natural forest areas, especially deciduous forest areas, the soil surface is usually covered with a thick litter layer, which not only weakens the radiation of the soil, but also adds its own radiation to the total radiation of the forest ecosystem, thereby reducing radiation. The sensitivity of brightness temperature observations to changes in soil moisture and snow parameters affects the inversion accuracy of understory soil moisture and snow parameters. Therefore, it is very importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01N15/08
CPCG01J5/00G01N15/08G01N2015/0846
Inventor 杨建卫李晓峰赵凯郑兴明
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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