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Frequency domain n-gamma identification method and device

An identification method and frequency domain technology, applied in the field of nuclear radiation detection, can solve the problems of insufficient use of digital signal processing and low identification reliability, and achieve high accuracy, simple algorithm, and good identification effect

Pending Publication Date: 2020-12-18
ROCKET FORCE UNIV OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of algorithm is relatively simple, but it does not make full use of the high-precision characteristics of digital signal processing after direct transplantation, so the reliability of recognition is not high

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  • Frequency domain n-gamma identification method and device
  • Frequency domain n-gamma identification method and device
  • Frequency domain n-gamma identification method and device

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Embodiment Construction

[0047] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] An embodiment of the present invention provides a frequency domain n-γ identification method, such as figure 1 As shown, the method includes:

[0049] 101. Perform pulse noise reduction in the frequency domain based on the Shannon entropy wavelet as the wavelet reconstruction coefficient for the pulse signal to be processed;

[0050] When implementing the embodiment of the present invention, the experimental method is used,...

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Abstract

The embodiment of the invention discloses a frequency domain n-gamma recognition method and device, relates to the technical field of nuclear radiation detection, and mainly aims to suppress high-frequency noise and even signals by adopting a noise reduction method taking Shannon entropy as a wavelet reconstruction coefficient, meanwhile, a low-frequency signal is not suppressed but is improved, the algorithm is simple, and the accuracy is high. According to the main technical scheme, the method comprises the steps of conducting frequency domain pulse noise reduction on a to-be-processed pulsesignal based on a Shannon entropy wavelet as a wavelet reconstruction coefficient; and extracting a pulse amplitude of 0 frequency from the to-be-processed pulse signal after noise reduction, and using the pulse amplitude of 0 frequency as a characteristic value to carry out frequency domain n-gamma identification.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of nuclear radiation detection, in particular to a method and device for identifying n-γ in the frequency domain. Background technique [0002] Most neutron radiation is accompanied by gamma rays, which mainly originate from the gamma scattering of the neutron source itself and the capture gamma rays of moderated neutrons. When particle detection is carried out in the mixed radiation field of n and gamma rays, n-gamma identification is required. In the field of n-γ identification technology, for n and γ-rays that have a certain time relationship, the difference in particle flight time (Time Of Flight, TOF) can be used for identification. For n and gamma rays that have no time relationship, pulse shape discrimination (Pulse Shape Discrimination, PSD) is generally used to distinguish them. According to the different pulse shapes, as early as in the nuclear physics experiments in the 195...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F17/14
CPCG06F17/14G06F2218/16G06F2218/06G06F2218/08
Inventor 许鹏周满王宋姚青旭蔡幸福霍勇刚黎素芬
Owner ROCKET FORCE UNIV OF ENG