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

singular value decomposition and the least square algoritmn

奇异值分解文章，描述分解维数和奇异值阶次选择对分解结果的影响。-Singular Value Decomposition article describes the singular value decomposition dimension and order selection effects on decomposition results.

基于奇异值分解滤波与APES算法的异步电动机转子故障检测-Based on singular value decomposition filtering and APES algorithm of asynchronous motor rotor fault detection