To fully utilize the character of the bioradar echo signal, autocorrelation analysis, spectral estimation methods and time-frequency analysis are presented in this paper. These methods are employed to deal with no one, single people and multi-people

采用奇异谱主分量分析方法从病理心音信号中提取杂音成对四种常见的病理心音信号进行奇异谱分析，得到各主分量和经验正交函数，选择合适阶次重构正常心音成分和杂音成分。分。-The principal component analysis singular spectrum extracted from the pathological heart sound signals murmur pairs four common pathological heart sound signals Singula

提出一种基于小波分析和奇异谱降噪理论的新方法, 在分析滚动轴承故障特性的基础上, 将奇异谱理论的降噪方法与小波分析理论结合应用于滚动轴承故障诊断中。实例表明,这种结合后的新方法能够更有效地降低噪声,突出振动信号的故障特性, 从而提高设备故障诊断的准确率。-Proposed based on wavelet analysis and Singular Spectrum Reduction Noise Theory new methods in the analysis of rolling bea