中文说明： ML法能够很好的估计信号的信噪比,实现了对10个数字音的识别程序匹配追踪和正交匹配追踪，研究生时的现代信号处理的作业，sar图像去噪的几种新的方法，基于互功率谱的时延估计。
English Description：
ML method can be a good estimation of the signal to noise ratio, realized for 10 digital music recognition program of matching pursuit and orthogonal matching pursuit, when modern signal processing operations, several new SAR image denoising method based on cross power spectrum time delay estimation.