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N=11，41，81，121时，用矩形窗设计一个低通FIR滤波器，其剪切频率wc＝0.3л(N = 11,41,81,121, the rectangular window design with a low-pass FIR filter, its cut frequencies wc = 0.3л)

说明：  用matlab编的小程序，希望对大家有所帮助！(using Matlab series of small programs, we hope to help!)

本书共分5篇48章。主要介绍MATLAB提供的统计、优化、偏微分方程数值解、样条和曲线拟合等5个与工程计算关系密切的工具箱。其中统计工具箱、优化工具箱、偏微分方程数值解工具箱和样条工具箱的介绍在国内图书中最全面，并且实例丰富，本书的内容紧随版本的最新变化。(Matlab Engineering Mathematics)

PCA:Principal Component Analysis Usage: [eigvector, eigvalue] = PCA(data, options) [eigvector, eigvalue] = PCA(data)(PCA Principal Component Analysis Usage: [eigvector, eigvalue] = PCA(data, options) [eigvector, eigvalue] = PCA(data))

此段程序可以完成数据波形的频谱细化和小波包分解(czt wavellet)

粗糙集中信息上与条件信息熵的计算代码程序，使用matlab编写而成的(The information entropy and cond entropy of rough set calculation code, and the use of matlab program,and that is all . )

This program Is an IR bandpass filter which filters the signal that is needed for processing.

MVDR是空域DOA的一种方法。可以对信号进行加强，对干扰进行抑制，同时去除高斯白噪声。最终得到方向。(MVDR is a method of DOA airspace. The signal can be enhanced interference suppression while removing Gaussian white noise.)

对信号进行EMD分解程序，并根据相关性，去掉一些成分。(The EMD decomposition program is performed on the signal, and some components are removed according to the correlation.)

说明：  产生线性调频信号，检测径向速度的目标，进行相干积累(Generate LFM signal for coherent accumulation)