far_field

说明：  修正MUSIC算法实现相干信号源的DOA估计算法(amendment MUSIC algorithm coherent signal source DOA estimation algorithm)

效果最好的三种二值化的方法 otsu niblack等 是自适应阈值方法(The best effect of three kinds of binarization methods otsu niblack, etc Is the adaptive threshold value method。)

武汉大学 遥感信息工程学院 2014-2015年 第一学期 matlab 第一次实习 学霸代码(Remote Sensing Information Engineering, Wuhan University first semester of 2014-2015 school matlab first internship， Pa code)

Introduction to Extended Kalman Filter

matlab simulink 仿真，异步电机的直接转矩控制，磁链为六边形磁链(matlab simulink simulation, asynchronous motor direct torque control, flux hexagonal flux)

通过直接在matlab软件环境下，运行split.m程序，生成结果（图像）(By matlab software environment directly in the running split.m program to generate the results (images) )

说明：  数字信号处理设计与仿真分析 (1)建立两个模拟信号的数学模型 sa1(t)和 sa2(t)， 其中 sa1(t)是有用信号， sa2(t)是干 扰信号。 两个信号的中心频率、信号带宽等参数由学生自己选定，要求两个信号的频谱不重 叠， sa2(t)的幅度比 sa1(t)的幅度高 20dB， 两个信号时域叠加得到合成信号 xa(t)， 即 xa(t)= sa1(t)+ sa2(t) 设计计算机程序仿真产生 sa1(t)、 sa2(t)、 xa(t)信号， 分别画出三个模拟信号的时域波 形和频谱图；(Establish two mathematical models of analog signals sa1(t) and SA2 (t), where SA1 (t) is the useful signal and SA2 (t) is the dry signal Interference signals.)

BP神经网络对2ask,2fsk,4fsk,2psk,4psk,gmsk六种信号的学习和训练。 (BP neural network 2ask, 2fsk, 4fsk, 2psk, 4psk. gmsk six signals in the learning and training.)

用数组产生盲节点和信标节点，比循环产生好许多(Produce blind node and beacon node with arrays, produce much better than the cycle)

说明：  双音频按键识别 背景： 打电话拨号时，每次按键会发出不同的声音，这些声音实际上是由一些固定频率的正弦信号合成的。因为每个按键声音包含两个不同频率的正弦信号，因此也被称为“双音频”信号，简记为DTMF。这相当于是对不同键位用‘音频’进行了编码，如同计算机领域中用数字0和1对处理对象（包括键盘）进行编码。(Two-tone buttons identify Background: When you call dial, each key emits different sounds, which is actually made up of some fixed frequency sinusoidal signal synthesis. Because the sound of each key contains two sinusoidal signals of different frequencies, it is also known as &quot two-tone&quot signal, abbreviated as DTMF. This is equivalent to different keys using the ' audio' encoded, as the computer industry with the numbers 0 and 1 pair of processing object (including the keyboard) to be encoded.)