simple

在信号处理中，信号发射时，信号通过载波，调制，以电磁波的形式发射出来 在接收端，射频信号通过天线接收，超外差式等方式进行处理，变频到中频 然后通过数字技术对中频信号进行处理，此时的中频信号采样率很高，多达几十兆赫 而要解调出来的信号很小，此时就要经过滤波来得到我们需要的信号 如果直接设计滤波器，阶数会非常庞大，软件，硬件设备都承受不了 因此，一般常用的技术是进行下变频处理，其主要技术就是通过抽取滤波进行下变频 常用的滤波器就是CIC抽取, 希望可以帮助一些坛友解决基本的问题。 (In signal processing, signal emission, signal through the carrier, in the form of electromagnetic wave modulation, launched In the receiver, rf signals through the antenna, specialized superheterodyne type means such as processing, the frequency conversion to intermediate frequency Then through digital technology of intermediate frequency signal processing, at this time of intermediate frequency signal sampling rate is very high, as many as several decades MHZ But the signal demodulation out is very small, at this time would be passing filter to get what we need signal If design directly filter, order number be colossal, software, hardware equipment all suffer Therefore, the technology is usually used for down-transducer processing, its main technical is by extracting filtering down-transducer Commonly used filter is CIC extraction, the hope can help some friends solve basic problems of the altar.)

这是刘金琨老师书上的第九章第十章例子，滑模变控制很好地学习资料。(Liu Jinkun teacher book Chapter IX Chapter example, sliding mode control is a good learning materials.)

说明：  控制外部程序 显示或隐藏 有需要的朋友可以下载试试 功能可以实现(控制外部程序 显示或隐藏)

升余弦滚降系统的源程序 matlab程序示例简要示范(Raised Cosine system source code matlab brief demonstration program examples)

对含有噪声滚动轴承振动信号做小波降噪，得到降噪后的波形(Waveform contains noise vibration signals do wavelet noise reduction, reduce noise after)

卫星定位算法，对卫星GPS多星定位的算法进行研究(MATLAB source localization Modeling feedback loop using MATLAB and Simulink)

MATLAB5.X应用与技巧也是一本比较老的关于MATLAB的教材，虽然是比较老版本的，但也有很好的指导做用(MATLAB5.X applications and skills is a relatively old on MATLAB materials, although the old version, but there are also a good guide to do with)

MVDR自适应波束形成的LMS算法使用，LMS算法迭代次数对波束形成结果的影响(MVDR adaptive beamforming using the LMS algorithm, LMS algorithm is the number of iterations on the results of beam-forming)

说明：  一个信号处理的的方法ICA，有用到的可以分享(ICA)

Programa que calcula la sestabilidad e una estructura flotante