应用小区域方差对比，程序简单，独立成分分析算法降低原始数据噪声，多元数据分析的主分量分析投影，Matlab实现界面友好，基于chebyshev的水声信号分析，详细画出了时域和频域的相关图。- Application of small area variance comparison, simple procedures, Independent component analysis algorithm reduces the raw data noise, Principal component analysis of multivariate data analysis projection, Matlab to achieve user-friendly, Based chebyshev underwater acoustic signal analysis, Correlation diagram shown in detail the time domain and frequency domain.