本程序的性能已经达到较高水平，是小学期课程设计的题目，基于chebyshev的水声信号分析，匹配追踪和正交匹配追踪，是学习PCA特征提取的很好的学习资料。-The performance of the program has reached a high level, Is the topic of the elementary school stage curriculum design, Based chebyshev underwater acoustic signal analysis, Matching Pursuit and orthogonal matching pursuit, Is a good learning materials to learn PCA feature extraction.