基于广义非线性变换的特征谱线增强方法

摘要

To improve feature extraction capacity of spectrum analysis in strong background noise and highlight concerned characteristic spectral lines,this paper puts forward generalized nonlinear transforma-tion method based on nonlinear transformation method.After comparison analysis,the result shows that the magnified threshold is changed from fixed to adjustable in generalized nonlinear transformation meth-od,which improves the flexibility and applicability of actual application,and easy to acquire the best en-hancement effects of characteristic spectral line.%为提高强背景噪声下频谱分析的特征提取能力，突出所关心的特征谱线，在非线性变换方法的基础上，提出了广义非线性变换方法。对比分析结果表明：广义非线性变换方法将固定的放大阈值改为可变值，提高了该方法实际应用的灵活性和适用性，易于获得最佳的特征谱线增强效果。