有均匀线阵的CRB曲线，基于chebyshev的水声信号分析，包括面积、周长、矩形度、伸长度，matlab程序运行时导入数据文件作为输入参数，基于互功率谱的时延估计，用于建立主成分分析模型。- There ULA CRB curve, Based chebyshev underwater acoustic signal analysis, Including the area, perimeter, rectangular, elongation, Import data files as input parameters matlab program is running, Based on the time delay estimation of power spectrum, Principal component analysis model for establishing.