一种中子脉冲序列核信号高速相关函数计算方法
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摘要
为解决基于PC机平台、高达1GHz采样率下的相关函数计算的实时性需求,针对中子脉冲序列核信号本身所具有的结构特点,设计了高速、实时的相关函数计算方法,实现了采样率为1GHz的中子脉冲序列核信号的实时相关函数计算。性能测试结果表明,算法达到了对中子脉冲序列核信号进行相关计算的时间在1h以内的实时性要求,使得铀部件质量丰度的实时检测成为可能。
The real-time algorithm of correlation calculation is presented for neutron pulse series up to 1 GHz sampling rates based on PC.The method is proposed based on the special structure of the series.Simulation demonstrates that the calculation time of the proposed correlation function algorithm is less than 1 h,the algorithm meets the demand of real-time correlation calculation,which make it possible to detect the quality and abundance of uranium components in real time.
The real-time algorithm of correlation calculation is presented for neutron pulse series up to 1 GHz sampling rates based on PC.The method is proposed based on the special structure of the series.Simulation demonstrates that the calculation time of the proposed correlation function algorithm is less than 1 h,the algorithm meets the demand of real-time correlation calculation,which make it possible to detect the quality and abundance of uranium components in real time.
引文
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[8]杜科.核信息系统的随机核信号频谱分析研究[D].重庆:重庆大学,2008.(Du Ke.The spectrum analysis and research of random nuclear signals in nuclear information systems.Chongqing:Chongqing University,2008)
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[10]唐跃林,魏彪,任勇,等.SSE在中子脉冲序列核信号实时频谱分析中的应用[J].核技术,2009,32(1):70-75.(Tang Yuelin,Wei Biao,Ren Yong,et al.Application of SSE to real-time frequency spectrum analysis for neutron pulse signal.Nuclear Techniques,2009,32(1):70-75)
[2]Mihalczo J T,Mullens J A,Matting-Ly J K,et al.Physical description of nuclear materials identification system(NWIS)signatures[J].Nuclear Instruments and Methods in Physics Research A,2000,450:531-555.
[3]李建胜,张翼,金宇,等.252Cf快裂变室研制[J].核电子学与探测技术,2001,21(4):264-267.(Li Jiansheng,Zhang Yi,Jin Yu,et al.Development of 252Cf fast fission chamber.Nuclear Electronics&Detection Technology,2001,21(4):264-267)
[4]连玄,李建胜,周浩军,等.252Cf源驱动噪声分析法测量α初步研究[J].原子能科学技术,2011,45(11):1308-1311.(Lian Xuan,Li Jiansheng,Zhou Haojun,et al.Preliminary investigation of 252Cf source driven noise analysis method forαmeasurement.Atomic Energy Science and Technology,2011,45(11):1308-1311)
[5]任勇,魏彪,李建胜,等.252Cf源驱动功率谱密度法测量系统[J].强激光与粒子束,2012,24(1):215-219.(Ren Yong,Wei Biao,Li Jiansheng,et al.Implementation of 252Cf-source-driven power spectrum density measurement system.High Power Laser and Particle Beams,2012,24(1):215-219)
[6]黄坡,谢文雄,谢奇林,等.金属铀部件235 U富集度中子时间关联符合测量实验优化分析[J].原子能科学技术,2012,46(3):257-263.(Huang Po,Xie Wenxiong,Xie Qilin,et al.Optimization analysis on neutron time correlation coincidence measurement for 235 U enrichments of uranium components.Atomic Energy Science and Technology,2012,46(3):257-263)
[7]于宁莉,易东云,涂先勤.时间序列中自相关与偏相关函数分析[J].数学理论与应用,2007,27(1):54-57.(Yu Ningli,Yi Dongyun,Tu Xianqin.Analyze auto-correlations and partial-correlations function in time series.Mathematical Theory and Applications,2007,27(1):54-57)
[8]杜科.核信息系统的随机核信号频谱分析研究[D].重庆:重庆大学,2008.(Du Ke.The spectrum analysis and research of random nuclear signals in nuclear information systems.Chongqing:Chongqing University,2008)
[9]Raman S K,Pentkovski V,Keshava J.Implementing streaming SIMD extensions on the Pentium III processor[J].IEEE Micro,2000,20(4):47-57.
[10]唐跃林,魏彪,任勇,等.SSE在中子脉冲序列核信号实时频谱分析中的应用[J].核技术,2009,32(1):70-75.(Tang Yuelin,Wei Biao,Ren Yong,et al.Application of SSE to real-time frequency spectrum analysis for neutron pulse signal.Nuclear Techniques,2009,32(1):70-75)