A ground-based infrared remote sensing surface temperature retrieval method

A surface temperature and infrared temperature technology, which is applied in the field of ground-based infrared remote sensing surface temperature inversion, can solve the problems of inability to display temperature, large errors, and many factors affecting the measurement results, and achieve the effect of accurate inversion.

Active Publication Date: 2020-08-18
CHENGDU UNIV OF INFORMATION TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, what is measured by the platinum resistance thermometer is the average value of the soil surface temperature and the temperature of the air next to it, so it cannot really represent the surface temperature.
And in the process of measuring the surface temperature by it, it needs to be in contact with the measured object, so there are many factors that affect the measurement result, the measured error is large, and manual maintenance is required, which cannot meet the needs of the new automatic weather station
In addition, in today's meteorological observations, platinum resistance to measure surface temperature is limited to bare ground and grass

Method used

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  • A ground-based infrared remote sensing surface temperature retrieval method
  • A ground-based infrared remote sensing surface temperature retrieval method
  • A ground-based infrared remote sensing surface temperature retrieval method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1 selects the underlying surface of the bare ground to observe the surface temperature experiment

[0076] The underlying surface of the bare ground is used as a test platform, and the lower part of the steel frame is installed with a counterweight base for a stable steel frame. The steel frame is equipped with a horizontal bracket whose height is adjusted by locking bolts. The horizontal bracket is perpendicular to the steel frame and Keep the distance between the horizontal bracket and the bare ground at 1m, install the selected infrared temperature sensor SI-111 on the horizontal bracket, make the probe of the infrared temperature sensor SI-111 face down vertically, and correspond to the bare ground; and install it on the horizontal bracket An SI-111-6545 infrared temperature sensor with a probe facing upwards for measuring atmospheric temperature is used for the measurement of atmospheric downward radiation to eliminate the influence of atmospheric ambient...

Embodiment 2

[0077] Embodiment 2 Select the underlying surface of the grassland to observe the surface temperature experiment

[0078] Select the underlying surface of the grassland to observe the surface temperature test, select the steel frame, base, and horizontal bracket as in Example 1, and stand the steel frame on the grass platform through the base, and install the horizontal bracket on the steel frame through locking bolts Above, the horizontal bracket and the steel frame are in a vertical state, keep the distance between the horizontal bracket and the grass surface at 1m, install the selected infrared temperature sensor SI-111 on the horizontal bracket, make the probe of the infrared temperature sensor SI-111 face down vertically, and Corresponding to the surface of the grassland, and the underlying surface of the grassland is installed with a PT100 four-wire platinum resistance temperature sensor, which is used to evaluate the surface temperature measurement temperature of the gro...

Embodiment 3

[0079] Embodiment 3 Select the underlying surface of the cement floor to observe the surface temperature experiment

[0080] The underlying surface of the cement floor is selected as the test platform. As in Example 1, a counterweight base for a stable steel frame is installed at the bottom of the steel frame. The frame is in a vertical state, and the distance between the horizontal bracket and the bare ground is kept at 1m. Install the selected infrared temperature sensor SI-111 on the horizontal bracket, so that the infrared temperature sensor SI-111 is vertically downward, and is placed on the bare ground corresponding to Infrared temperature measuring probe, and the PT100 four-wire platinum resistance temperature sensor is installed on the underlying surface of the cement floor, which is used to evaluate the surface temperature measurement temperature of the ground-based infrared remote sensing. The infrared temperature sensor is collected through the ADAM module ADAM-4118 ...

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Abstract

The invention provides a method for inversion of ground-based infrared remote sensing surface temperature, comprising step 1. constructing a measurement system, and collecting factors affecting measurement data, and step 2. finding out factors affecting infrared remote sensing surface temperature through the measurement system in step 1 Main factors, and as input parameters, step 3. build BP neural network through the sample data measured in step 1, step 4. use the measurement data of the measurement station to correct the data measured in step 1, and verify it by platinum resistance measurement the correctness of this method. The invention provides an inversion method for ground-based infrared remote sensing surface temperature, which can remotely measure any ground surface by using the principle of infrared radiation, and overcomes the problems existing in traditional platinum resistance measurement.

Description

technical field [0001] The invention belongs to the field of temperature measurement, in particular to an inversion method of ground-based infrared remote sensing surface temperature. Background technique [0002] At present, the limitations of the platinum resistance surface temperature observation method mainly used in my country's meteorological stations have become increasingly prominent. There are problems that need to be solved urgently, such as being greatly affected by environmental factors, poor accuracy, poor adaptability to different underlying surfaces, and high manual maintenance. The development of the direction of automatic observation of surface temperature is restricted. [0003] The surface temperature is also called the underlying surface temperature, including soil temperature, snow surface temperature or grass surface temperature. The maintenance and change of surface temperature are affected by factors such as incident solar radiation, atmospheric long-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G06N3/08
CPCG01J5/00G06N3/084
Inventor 邓小波王培宇马尚昌张素娟樊昌元张升兰
Owner CHENGDU UNIV OF INFORMATION TECH
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