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Atmospheric radon correction method for aviation radioactivity spectrum data

A technique of atmospheric radon and spectral data, applied in the field of airborne geophysical exploration

Active Publication Date: 2020-03-10
核工业航测遥感中心
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for correcting airborne radioactivity spectrum data atmospheric radon, to solve the problem that atmospheric radon needs to be corrected in the full spectrum method

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  • Atmospheric radon correction method for aviation radioactivity spectrum data

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Embodiment Construction

[0025] Such as figure 1 Shown, the present invention comprises the following steps:

[0026] a. Fly at least two different altitudes at an altitude of 3000m and above in the test zone, and collect cosmic ray data at different heights in the test zone;

[0027] b. According to the cosmic ray data collected in the step a, calculate the test band full-spectrum aircraft background and cosmic ray full-spectrum influence coefficient;

[0028] c. Fly in a dynamic test zone with water surface and land, fly at multiple altitudes below 300m, and collect data of atmospheric radon at different altitudes;

[0029] d. According to the data of atmospheric radon at different heights in the test zone collected in step c, the full-spectrum aircraft background and cosmic ray full-spectrum influence coefficient of the test zone are corrected;

[0030] e. After correcting the full-spectrum aircraft background and cosmic ray full-spectrum influence coefficients in the test zone, obtain the atmosp...

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Abstract

The invention relates to an atmospheric radon correction method for aviation radioactivity spectrum data. The method comprises the steps of: calibrating a device in a test tape to obtain a full-spectrum aircraft background, a cosmic ray full-spectrum influence coefficient, an atmospheric radon unit spectrum, a uranium nuclide transmission coefficient (a1), a thorium nuclide transmission coefficient (a2) and a geometric coefficient (a3) of the test tape; performing data acquisition in an actual measurement area; correcting the full-spectrum aircraft background and cosmic ray full-spectrum influence coefficient of the actual measurement area according to the full-spectrum aircraft background and cosmic ray full-spectrum influence coefficient, the atmospheric radon unit spectrum, the uraniumnuclide transmission coefficient (a1), the thorium nuclide transmission coefficient (a2) and the geometric coefficient (a3) obtained during calibration; and calculating the atmospheric radon unit content of the actual measurement area and the atmospheric radon spectrum data of the actual measurement area, and finally, carrying out atmospheric radon correction on the spectrum data. According to themethod, atmospheric radon of spectral data in a full spectrum method can be corrected, and the problem that the atmospheric radon needs to be corrected in the full spectrum method is solved.

Description

technical field [0001] The invention belongs to the technical field of aerial geophysical prospecting, and in particular relates to an atmospheric radon correction method for aerial radioactivity spectrum data. Background technique [0002] Airborne geophysical prospecting is an airborne geophysical prospecting technology integrating multiple new technologies, which is characterized by high efficiency, rapidity and economy. The main airborne geophysical methods include airborne magnetic survey, airborne radioactive survey, airborne gravimetric survey and airborne electromagnetic survey. my country's aviation work started in the early 1950s, mainly aeronautical magnetic survey and airborne radioactive survey, which were used to find mineral resources such as magnetic deposits, radioactive deposits and oil and gas fields, and then gradually expanded to geological mapping and tectonic research , radioactive environment measurement and nuclear accident emergency monitoring and o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36G01T7/00
CPCG01T1/36G01T7/005Y02A90/30
Inventor 李兵海
Owner 核工业航测遥感中心
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