Improved-differential

这是IIR数字滤波器的设计及滤波程序，IIR滤波器用matlab实现，滤波数据用C生成，主程序实现数字滤波(This is the IIR digital filter design and filtering procedures, IIR filter using matlab, using C to generate filtered data, the main program to achieve digital filtering)

小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)

Feeding antennas with proper signals can be difficult. The signal is often described as a voltage, and voltages are not well defined in electromagnetic wave formulations. There are several tricks to model voltage generators in such situations, and one is the magnetic frill. This model shows the basic steps of defining a magnetic frill voltage generator for a dipole antenna, and it also compares the resulting antenna impedance with known results.

2PSK调制与解调matlab仿真，包括高斯信道awgn，误码率分析(2PSK modulation and demodulation matlab simulation, including the Gaussian channel awgn, bit error rate analysis)

结构动benchmark，求解多自由度响应(The structural dynamics Newmark method for solving the multi-degree-of-freedom response)

power system stability equal area matlab code

MATLAB环境下，LTE信道模型的仿真程序(MATLAB environment, LTE channel model simulation program)

广义动态因子模型的matlab代码，用于估计变量的共同成分，以及预测。(GDFM matlab code)

说明：  some code of spectral estimation method-non parametric method

基于免疫的多目标优化遗传算法[PDF].(Multi-objectiveOptimizationGeneticAlgorithm Based on Immune )