基于LabVIEW的252Cf中子源频谱分析
Frequency spectrum analysis of 252Cf neutron source based on LabVIEW
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摘要: 从252Cf中子源频谱测量系统的基本原理出发，针对中子脉冲序列本身“0，1”数据结构的特点，设计了自、互相关快速算法。采用LabVIEW多核处理器、多线程编程技术构建了基于LabVIEW的252Cf中子源频谱分析系统，不仅获得了自、互相关的快速计算结果，而且获得了自、互功率谱及谱密度比。研究结果表明：基于LabVIEW分析工具，既提升了自、互相关算法代码25%~35%的执行效率，又验证了LabVIEW用于进行频谱系统分析的可行性。Abstract: The frequency spectrum analysis of 252Cf Neutron source is an extremely important method in nuclear stochastic signal processing. Focused on the special “0” and “1” structure of neutron pulse series, this paper proposes a fast-correlation algorithm to improve the computational rate of the spectrum analysis system. And the multi-core processor technology is employed as well as multi-threaded programming techniques of LabVIEW to construct frequency spectrum analysis system of 252Cf neutron source based on LabVIEW.It not only obtains the auto-correlation and cross correlation results, but also auto-power spectrum, cross-power spectrum and ratio of spectral density. The results show that: analysis tools based on LabVIEW improve the fast auto-correlation and cross corr
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