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说明：  条带模式SAR成像RD算法，在小斜视角情况下仍然适用(Striped pattern SAR imaging algorithm RD, in the small oblique angle remains applicable)

THis is a matlab for EIT model

simulink ODE first order example

1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。 需要用到的函数： fir1 用窗函数设计FIR滤波器的函数 2. 用GUI设计一界面（如图1所示）完成如下功能： 1） 输入一语音信号，画出语音信号的时域图和频谱图； 2） 对语音信号加噪处理，画出加噪后的时域图和频谱图； 3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。 (1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each )

cognitive Radio simulation in matlab thanks

本代码在OFDM系统中，用matlab实现8-PSK的调制、载波同步及其误码率计算(This code completes The modulation，carrier synchronization and the bit error rate test of 8-psk in an OFDM system .)

说明：  用于根据 三维 数据 点 计算平面度 的 matlab 程序。(According to data points for three-dimensional flatness of matlab calculation procedures.)

说明：  a simple CNN for matlab , deep learning tools

全方位入門學習matlab的書籍,從基本操作到資料分析與顯示都是做研究必備的基本工具.(a ebook for learning matlab, you can learn matlab basic operations and programming for your research.)

熵与条件熵，疑义度，噪声熵，互信息等计算程序熵与条件熵，疑义度，噪声熵，互信息等计算程序(Entropy and conditional entropy, equivocation, noise Entropy, mutual information, and procedures for Entropy and conditional entropy calculation, doubt, noise Entropy, mutual information calculation program)