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this is a simulation file for filters

指出了城市的主要污染物长期以来对城市居民造成了直接的危害，为更好地反映其污染变化趋势、加强污染防治工作和预防严重污染事件的发生，研究了污染预测方法，开展了污染预报工作。借助于MATLAB极强的非线性处理能力，来解决大气环境主要污染物自身复杂多变的问题，探讨了将MATLAB技术应用到空气污染的主份因子分析及预测领域中。(Pointed out that the city has long been the main pollutants of urban residents a direct harm, to better reflect its pollution trends, strengthen the prevention and control of pollution and prevention of serious pollution incidents, to study the pollution prediction method, carried out pollution forecast work. MATLAB help of strong nonlinear processing capabilities to solve complex atmospheric environment of major pollutants own issues discussed will be applied to the master copies of MATLAB technical factor analysis and forecasting in the field of air pollution.)

说明：  Matlab语言及其在电子信息工程中的应用，讲的非常好！(Matlab languange and its implitation in electric and information engineering)

一些Optisystem软件的仿真例子，通过这些例子学习可以轻松上手，适合从事光纤研究人员。(some examples for Optisystem)

说明：  包含雷达信号处理的基本流程与操作规范的matlab代码示例，内容选摘如下： 一、脉冲压缩 窄带（或某些中等带宽）的匹配滤波： 相关处理，用FFT数字化执行，即快速卷积处理，可以在基带实现（脉冲压缩） 快速卷积，频域的匹配滤波 脉宽越小，带宽越宽，距离分辨率越高； 脉宽越大，带宽越窄，雷达能量越小，探测距离越近；(Matlab code examples including the basic flow and operation specifications of radar signal processing are as follows:)

convolution coding program using viterabi algorithm

核密度估计，用于识别和核密度计算，采用高斯插样。(kernel density evalue.it is used for statistical pattern recognition.)

lms算法实现滤波，重构权值，对噪声信号进行重构，可以实现时延计算(LMS algorithm filtering, reconstruction of the right value, the noise signal reconstruction, time-delay calculation can be achieved)

使用粒子群算法优化控制器参数，设计PD控制器。(The use of particle swarm optimization of controller parameters, design PD controller.)

说明：  讲述了灌型CT的工作原理和过程，具有重要的意义(Describes the working principle of irrigation-based CT and process of great significance)