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A method for accurately determining the position of mines based on pgnaa technology

A method of determining landmines, which is applied to measuring devices, nuclear radiation exploration, geophysical measurement, etc., can solve the problem of not determining the location of landmines

Active Publication Date: 2020-10-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

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Problems solved by technology

At present, there is no mature and effective detection method for determining the location of mines within the detection limit

Method used

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  • A method for accurately determining the position of mines based on pgnaa technology
  • A method for accurately determining the position of mines based on pgnaa technology
  • A method for accurately determining the position of mines based on pgnaa technology

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Embodiment Construction

[0057] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0058] see figure 1 , a method for accurately determining the location of mines based on PGNAA technology, which includes the following steps:

[0059] Step 1: Establish the position response function PRF (PositionResponse Function) of the relative count RC (Relative Count);

[0060] Specifically, the relative count RC is defined as the signal count generated by each neutron emitted by the neutron source, and its calculation is based on the following formula:

[0061]

[0062] Where C is the signal net count (total count - background count);

[0063] is the average neutron yield (n / s) of the neutron source;

[0064] t is the measurement time (live time).

[0065] R and r are the relative positions of the mines;

[0066] The relationship ...

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Abstract

The present invention provides a method for accurately determining the location of landmines based on PGNAA technology. The method for accurately determining the location of mines based on PGNAA technology includes the following steps: Step 1: Establish the position response function PRF of the relative count RC; Step 2: Design and build simulated minefields based on the soil conditions and types of mines in the minefield to be tested. The detection device scans and detects it; Step 3: Process the result of Step 2 to obtain the relative count of the detection device; Step 4: Based on the results of Step 3 and Step 1, use the data fitting method to obtain the position response function PRF Parameters; Step 5: Based on the parameters obtained in Step 4, establish a position response function PRF for different soil environments and mine types for detection of unknown minefields.

Description

technical field [0001] The invention relates to a method for accurately determining the position of a mine based on PGNAA technology, and belongs to the technical field of mine detection. Background technique [0002] At present, in the detection of landmines, PGNAA technology is gradually becoming an important detection technology. It has advantages that other detection technologies such as electromagnetic induction detection technology do not have, including high penetration, anti-electromagnetic interference, and direct identification of characteristic nuclides. The principle of PGNAA technology is to identify and characterize a certain element in the sample by using the instantaneous characteristic γ-rays emitted by inelastic scattering (n, n'γ) and radiation capture (n, γ) reactions between neutrons and matter. , quantitative analysis, in the detection of landmines, PGNAA technology can detect the characteristic signals of explosives in landmines, thus completing the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V5/00G01T1/20
CPCG01T1/20G01V5/234
Inventor 黑大千代文翰李佳桐贾文宝程璨蔡平坤汤亚军孙爱赟赵冬胡强
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS