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Method for accurately determining mine position based on PGNAA technology

A method for determining landmines, used in measurement devices, nuclear radiation exploration, geophysical surveys, etc., and can solve the problem of not determining the location of landmines

Active Publication Date: 2019-04-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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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  • Method for accurately determining mine position based on PGNAA technology
  • Method for accurately determining mine position based on PGNAA technology
  • Method for accurately determining mine position 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); 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:

[0060]

[0061] Where C is the signal net count (total count - background count);

[0062] is the average neutron yield (n / s) of the neutron source;

[0063] t is the measurement time (live time).

[0064] R and r are the relative positions of the mines;

[0065] The relationship between th...

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Abstract

The invention provides a method for accurately determining the position of a mine based on PGNAA technology. The method for accurately determining the position of the mine based on the PGNAA technology comprises the following steps: step one, establishing a position response function PRF of a relative count RC; step two, designing and constructing a simulated minefield according to the soil condition of the minefield to be detected and the mine types, and scanning and detecting the simulated minefield by using a detection device; step three, processing the result of the step two to obtain therelative response count of the detection system; step four, obtaining parameters in the position response function PRF by using a data fitting method based on the results of the step three and the step one; step five, establishing a position response function PRF aiming at different soil environments and mine types based on the parameters obtained in the step four for detecting unknown mine areas.

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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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
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