γ能谱小波降噪控制研究

Research of Wavelet De-noising Control for γ Spectrum

通过对γ能谱小波降噪迭代过程中降噪不足和降噪过度现象的研究,提出了用以表征降噪程度的数量指标——相对噪信比,建立了基于该指标的迭代停止规则。模拟和实测γ能谱的降噪结果均显示,相对噪信比及相应迭代停止规则具有合理性和有效性。

Through the study of the shortages and excesses in the wavelet de-nosing iter-ative process for γ spectrum ,the relative noising signal ratio （RNSR） was put forward as the index w hich used to characterize the degree of de-noising ,and the iterative stop-ping rule based on the index was established .The results of de-nosing for γspectrum in both simulative and practical experiments indicate the rationality and validity of the RNSR and the corresponding iterative stopping rule .