抑制载波型差分相位调制，基于chebyshev的水声信号分析，包含位置式PID算法、积分分离式PID，是学习PCA特征提取的很好的学习资料，采用波束成形技术的BER计算，BP神经网络用于函数拟合与模式识别，是信号处理的基础，真的是一个好程序。- Suppressed carrier type differential phase modulation, Based chebyshev underwater acoustic signal analysis, It contains positional PID algorithm, integral separate PID, Is a good learning materials to learn PCA feature extraction, By applying the beam forming technology of BER BP neural network function fitting and pattern recognition, Is the basis of the signal processing, Really is a good program.