Trapezoidal filter for digital spectrum acquire

Yinyu LIU; Yudong WANG; Rong ZHOU; Chaowen YANG

doi:10.11889/j.0253-3219.2017.hjs.40.020402

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Trapezoidal filter for digital spectrum acquire

NUCLEAR ELECTRONICS AND INSTRUMENTATION | 更新时间：2021-05-19

- Trapezoidal filter for digital spectrum acquire
- NUCLEAR TECHNIQUES Vol. 40, Issue 2, Article number: 020402(2017)
- 作者机构：
  
  四川大学物理科学与技术学院辐射物理与技术教育部重点实验室成都 610064
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of China;Excellent Youth Fund of Sichuan University
- DOI：10.11889/j.0253-3219.2017.hjs.40.020402
  CLC： TL82
- Received：14 November 2016，
  
  Revised：06 December 2016，
  
  Published：10 February 2017
- 稿件说明：
移动端阅览
Yinyu LIU, Yudong WANG, Rong ZHOU, et al. Trapezoidal filter for digital spectrum acquire[J]. Nuclear techniques, 2017, 40(2): 020402
DOI：

Yinyu LIU, Yudong WANG, Rong ZHOU, et al. Trapezoidal filter for digital spectrum acquire[J]. Nuclear techniques, 2017, 40(2): 020402 DOI： 10.11889/j.0253-3219.2017.hjs.40.020402.

摘要

在数字化能谱采集系统中，往往需要添加适当的脉冲成形算法对数字化核信号进行处理，以提升系统能量分辨率等指标。梯形成形算法因具有实现简单、成形脉冲窄等诸多优势而得到广泛的应用。从探测器输出的脉冲信号进行数学模型建立及简化出发，对信号模型的梯形成形算法进行分析讨论，并利用Simulink在现场可编程逻辑门阵列（Field-Programmable Gate Array，FPGA）上实现并改进梯形成形算法，通过实验测试了成形算法的可行性及其在能谱测量过程中对能量分辨率的提升。

Abstract

Background

Since the 1990s

with the rapid development of various digital devices

nuclear signal digital processing has been widely used.

Purpose

To enhance energy resolution of digital spectrum system of nuclear radiation measurement

appropriate filter and pulse shaping algorithm is necessary. Trapezoidal filter is widely used for its advantage of easy to use and narrow pulse width

etc

Methods

The trapezoidal model and two kinds of trapezoidal filter algorithm based on simplified mathematical model of detector's output pulse signal are established.

Results

The energy resolution of

137

Cs spectrum has improved to 7.65% from 10.78%.

Conclusion

Trapezoid shaping is necessary in nuclear signal digital processing.

关键词

Keywords

references

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