数字高斯脉冲成形算法仿真研究

洪旭; 倪师军; 周建斌; 马英杰; 刘易; 周伟

doi:10.11889/j.0253-3219.2016.hjs.39.110403

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数字高斯脉冲成形算法仿真研究

核电子学与仪器 | 更新时间：2021-05-24

- 数字高斯脉冲成形算法仿真研究
- Simulation study on Gaussian pulse shaping algorithm
- 核技术 2016年39卷第11期文章编号：110403
- 作者机构：
  
  1.成都理工大学核技术与自动化工程学院成都 610059
  2.东华理工大学放射性地质与勘探技术国防重点实验室南昌 330013
- 作者简介：
  
  [ "洪旭,男,1989年出生,2015年于成都理工大学获硕士学位,现为博士研究生,从事核信号获取与处理研究", "HONG Xu, male, born in1989, graduated from Chengdu University of Technology with a master’s degree in 2015, doctoral student, engaged in nuclear signal acquisition and processing research" ]
- 基金信息：
  
  国家自然科学基金(No.11475036);放射性地质与勘探技术国防重点实验室开放基金(No.RGET1201)
- DOI：10.11889/j.0253-3219.2016.hjs.39.110403
  中图分类号： TL822.6
- 收稿日期：2016-05-09，
  
  修回日期：2016-09-19，
  
  纸质出版日期：2016-11
- 稿件说明：
移动端阅览
洪旭, 倪师军, 周建斌, 等. 数字高斯脉冲成形算法仿真研究[J]. 核技术, 2016,39(11):110403

Xu HONG, Shijun NI, Jianbin ZHOU, et al. Simulation study on Gaussian pulse shaping algorithm[J]. Nuclear techniques, 2016, 39(11): 110403
洪旭, 倪师军, 周建斌, 等. 数字高斯脉冲成形算法仿真研究[J]. 核技术, 2016,39(11):110403 DOI： 10.11889/j.0253-3219.2016.hjs.39.110403.

Xu HONG, Shijun NI, Jianbin ZHOU, et al. Simulation study on Gaussian pulse shaping algorithm[J]. Nuclear techniques, 2016, 39(11): 110403 DOI： 10.11889/j.0253-3219.2016.hjs.39.110403.

摘要

高斯脉冲具有良好的时间、频率响应和较高的信噪比，探测器输出信号通常被滤波成形为高斯波形或类高斯波形。在高斯脉冲成形算法基础上，引入截止频率和品质因子，讨论成形参数对成形脉冲幅度、宽度的影响。通过与梯形脉冲成形算法对比，研究高斯脉冲成形算法的滤波效果以及对核信号幅度谱的作用。结果表明，在相同达峰时间条件下高斯脉冲成形算法具有更好的噪声抑制能力，同时可减小核信号幅度谱的半高宽；结合使用梯形脉冲成形算法可改善高斯脉冲成形算法在处理堆积脉冲中的不足，提高核信号通过率。

Abstract

Background

The Gaussian pulse possesses the advantages of time response

frequency response and signal-to-noise ratio (SNR)

thereby nuclear signal is usually shaped to Gaussian or Semi-Gaussian pulse shape.

Purpose

This work aims to simulation study on Gaussian pulse shaping algorithm and discuss the influence of shaping parameters on the amplitude and width of the shaped pulse.

Methods

The cutoff frequency and quantify factor are introduced into Gaussian pulse shaping algorithm. The filtering performance of the algorithm and its effects on amplitude spectrum are evaluated and compared with the trapezoidal pulse shaping algorithm.

Results

The simulation results suggest that Gaussian pulse shaping algorithm has better performance than trapezoidal pulse shaping algorithm in filtering when the peaking times of the shaped pulses are equal. Also

Gaussian pulse shaping algorithm can reduce the full width at half maximum (FWHM) of nuclear signal amplitude spectrum.

Conclusion

Combined with the trapezoidal pulse shaping algorithm

the defect of Gaussian pulse shaping algorithm in pile-up pulse separation can be improved to increase output stream of nuclear signal.

关键词

Keywords

references

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