IIR-digital-filter-in-MATLAB

说明：  matlab基础教学系列6，一步步送入熟练(the door to matlab)

minutiae-based matching algorithms in fingerprint recognition systems

无线通信算法中的LTE-A实现matlab仿真平台，包括VsXlFg调制编码方式，以及BsqDcTg技术，多天线，协同通信的基本原理，都调试通过了，是个整体框架程序。 (Wireless communications algorithms achieve LTE-A matlab simulation platform, including VsXlFg modulation and coding schemes, as well asBsqDcTg technology, multiple antennas, the basic principles of cooperative communication, both through debugging, and is a whole framework program. )

由于信号在传播过程中，由于接收机的移动，就会产生多普勒频移，该文件先分析了多普勒滤波器的频响以及对多普勒频移进行了仿真(Due to the signal in the propagation process, due to the movement of the receiver, and will produce the Doppler shift, the file is first analyzed the frequency response of the Doppler filter and the Doppler shift the simulation)

本文提出了一种适用于低轨卫异扩频通信系统的多普勒频移快捕方法.该方法基于数字匹配滤波器及自动频率控制环路_利用数字匹配滤波器的囚码快捕特性及其输出主相关峰值对频偏的敏感性，缩短多普勒频移的 捕获时间.论文首先推导了多普勒频移的平均捕获时间表达式，然后根据数值分析结果得到了准最佳捕获判决策略，最后通过比较验证了该快捕方法相对于传统串行捕获方法在性能上的提高. (This paper presents a low-orbit health for different spread spectrum communication system fast catching the Doppler shift method, which based on digital matched filter and automatic frequency control loop _ prisoners using digital matched filter code features rapid acquisition and the output of the main correlation peak frequency deviation of the sensitivity of the Doppler frequency shift to shorten acquisition time. paper first derive the mean Doppler shift acquisition time expression, then the numerical results obtained quasi-optimal capture decision strategies, and finally verified by comparing with the rapid acquisition method to capture the traditional method of serial improvement in performance.)

说明：  五点三次平滑法可用作时域和频域信号平滑处理。对时域作用是减少混入振动信号中的高频随机噪声。对频域是能使谱曲线光滑。(Three five-point smoothing method can be used as time domain and frequency domain signal smoothing. Effect on the time domain vibration signals to reduce high-frequency mixed with random noise. On the frequency domain is the spectral curve can smooth.)

神经网络函数逼近源代码,函数用了sin三角函数，你也可以随便换成其他函数使用(Neural network function approximation source code, with the sin trigonometric functions, you can easily switch to other functions use)

Constant k filters, also k-type filters, are a type of electronic filter designed using the image method. They are the original and simplest filters produced by this methodology and consist of a ladder network of identical sections of passive components. Historically, they are the first filters that could approach the ideal filter frequency response to within any prescribed limit with the addition of a sufficient number of sections. However, they are rarely considered for a modern design, the principles behind them having been superseded by other methodologies which are more accurate in their prediction of filter response.A filter in which the product of the series and shunt impedances is a constant that is independent of frequency.

MATLAB6.0数学手册的电子书，很不错，大家可以下载下来参考一下(MATLAB6.0 Mathematics e-book manual, very good, everyone can download it for reference)

Ar气在CO2激光作用下的电离mmatlab程序代码。 (Ar gas effect of CO2 laser ionization mmatlab program code.)