介绍了一种基于多元统计分析的降噪处理方法——NASVD方法的核心思想及其程序实现步骤。对某地区航空伽玛能谱测量数据集进行降噪处理的试验结果表明:NASVD方法能够显著地消除原始能谱数据中统计涨落的影响,其降噪效果明显优于传统的能谱降噪方法。
A noise reducing method based on multivariate statistical analysis for gamma-ray spectra——the NASVD method(Noise Adjusted Singular Value Decomposition),main idea and algorithm for realizing of the NASVD are introduced in the paper.The NASVD method is used to an airborne gamma-ray data set,the result has shown that the method can dramatically remove statistical noise from raw gamma-ray spectra and the quality of processed data is much better than that of the conventional spectral denoising methods.