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BP神经网络预测数据，matlab实现。(BP(ANN)relize forecasts data,matlab.)

说明：  理想线扩散函数的matlab程序，即贝塞尔函数的积分。输入输出见文件内的注视(The ideal line spread function of the matlab program, that is, the integral Bessel function. Input and output, see the paper' s attention)

完整的matlab程序实现数字下变频，ddc_out为主程序。内有详细的注释，易懂。(Complete matlab program digital down conversion. ddc_out is the main program. There are detailed notes, and easy to understand. )

离散数据的傅里叶正交基拟合，matlab程序，可修改(Fourier orthogonal basis of discrete data fitting, matlab program can be modified)

关于非线性离散系统辨识，小波包分析提取振动信号中的特征频率，数学方法是部分子空间法。( Nonlinear discrete system identification, Wavelet packet analysis to extract vibration signal characteristic frequency, Mathematics is part of the subspace.)

carrier_count= 200 bits_per_symbol = 2 symbols_per_carrier = 50 loop=10 num=5 循环次数 10 子载波数 200 位数/ 符号 2 符号数/ 载波 50 训练符号数 5 循环前缀长度 T/4 调制方式 QAM 多径信道数 2（缺省） 信道最大时延 5 (单位数据符号) 仿真条件 收发之间严格同步 一个OFDM系统 在瑞利信道环境下 包括信道估计 比较适合初学者(carrier_count = 200 bits_per_symbol = 2 symbols_per_carrier = 50 loop = 10 num = 5 10 cycles 200 of the median number of subcarriers/symbol and the number of symbols of 2 /50 of the carrier the number of training symbol cyclic prefix length of 5 T/4 modulation QAM Number of multi-path channel 2 (default) 5 channel maximum delay (in the data symbol) strict synchronization between the simulation conditions receive an OFDM system in Rayleigh channel environment, including more suitable for channel estimation beginner)

使用MATLAB语言编写的有限元程序，是对[Programming_the_Finite_Element】中Fortran语言的MATLAB语言重写(Use MATLAB language finite element program is [Programming_the_Finite_Element MATLAB language] in Fortran language rewrite)

doing the operation of windrow hoff process

Lattice Boltzmann 程序，使用D2Q9模型，模拟流体在多孔介质中的渗流。(procedures, the use of D2Q9 model Simulation of Fluid in the porous medium flow.)

Kalman滤波在跟踪轨迹时的使用，得到更好的图像(The use of Kalman filter in tracking trajectory, get a better image)