基于DSP的核信号处理方法研究

研究用全数字化手段处理和分析核信号过程中的重要算法和关键实现技术是相当重要的。通过仿真和电路设计试验，分析了数字核信号的移动积分、正交多项式半高斯波形拟合算法和峰值寻找算法，使用环形存储器实现了信号触发后的不同记录方式，使用Dither法改善ADC的微分非线性，以及多级流水线结构设计可以减少系统死时间等。这些工作是下一步设计高性能通用核信号分析谱仪和用全数字化手段实现大型核仪器探测器模块电子学的基础。

Study on nuclear pulse signal processing method based on DSP techniques

Fully digital processing methods based on DSP technique to nuclear pulse signal is necessary for building detector module electronics of large-scale nuclear equipment or for general-purpose nuclear spectroscopy. The essential processing algorithms: moving integration, orthogonal polynomial fitting and peak finding are investigated and analyzed. Some key implementation techniques, such as the realization of flexible trigger and recording mode, dither, and multiple pipeline structure design are introduced and tested also in the paper. Base on the algorithms and implementation techniques summarized in the paper, a nuclear spectroscopy with high performance will be constructed.