探测核辐射粒子及能谱分布可实现物质成分与元素含量的无损检测，被广泛应用于工农业、环境、能源、航天、国家安全等领域。数字核谱仪系统中滤波成形方法与技术的改进一直作为热点研究问题，现有研究成果表明数字滤波成形算法、最优化选取原则、高速实现技术等方面缺少深入研究，本项目拟从核脉冲信号特性出发，重点研究：(1)通过最优化数字滤波成形理论的研究，建立核脉冲信号数字滤波成形算法的数值模型；(2)构建数字滤波成形处理仿真平台与研发基于FPGA的数字核谱仪系统，重点解决核脉冲信号数字滤波成形方案、成形参数最优化选取的核心问题；(3)基于最优化选取原则改进滤波成形算法的数值模型，并研究其高速实现技术；(4) 建立不同数字滤波成形方案、成形参数与最佳性能指标间的对应关系，探索核脉冲信号最优化数字滤波成形方法的评价机制，以完善核脉冲信号数字化处理技术与方法的理论体系，为数字核谱仪性能指标的提升奠定研究基础。

The detection of nuclear radiation particles and energy distribution can be achieved non-destructive test in material composition and element content, which is widely used in industry, agriculture, environment, energy, aerospace, national security and other fields.The performance of nuclear spectrum measurement system mainly depends on the filter forming method and technology. The current situation is lack of in-depth study of digital filter shaping method and high speed technology in the digital nuclear spectrometer, the project intends to depart from the nuclear signal of the detectors, it focuses on:(1) According to the study of digital filter theory,it will establish numerical model of filter shaping algorithm in nuclear pulse signal.(2) The project wants to build up a nuclear signal simulation platform, and structure a digital nuclear spectrum measurement system based on FPGA ,which is to constructed with multiple sets of digital shaping algorithm platform at the same time,to obtain optimization principle of the filter shaping methods and parameters.(3) According to the optimization principle,the numerical model of digital filter shaping algorithm will be improved and the high speed realization technology will be researched.(4) It is to establish the corresponding relationship between the nuclear signal processing results at different filter shaping method and parameter and the optimal performance index,which explore a nuclear pulse signal optimization of digital method for evaluating   mechanism. All of the research results will be used to improve the theoretical system of nuclear pulse signal digital processing technology and lay the foundation for the development of high-performance digital nuclear spectrometer system.