math1

c++实现的通信录，实现添加、删除、查找、修改等功能(communications recorded c++ implemented add, delete, search, modify functions)

简单的表单程序，希望对广大同志们的学习有所帮助，谢谢大家。(biaodan)

SIGMA DELTA MODULATOR

bp神经网络的非线性系统建模————非线性函数拟合(nonlinear system modeling bp neural network nonlinear function fitting )

微分方程组数值解方法，IDW距离反比加权方法，数据模型归一化，模态振动，isodata 迭代自组织的数据分析，研究生时的现代信号处理的作业，是路径规划的实用方法。(Numerical solution of differential equations method, IDW inverse distance weighting method, Normalized data model, modal vibration, Isodata iterative self-organizing data analysis, Modern signal processing jobs when the graduate, Is a practical method of path planning.)

通过给出的随机过程，该随机过程是由3个实正弦信号组成，归一化频率分别为0.1,0.25,0.27，其中相位是相互独立在【0,2*pi】上分布的随机相位；噪声是均值为0、方差为1的实高斯白噪声，信噪比为30db,30db,27db,观测样本数为N，通过bartlett法，Welch法，周期图法计算随机过程的概率谱(Given by stochastic process, the stochastic process is composed of three real sine signal, the normalized frequency were 0.1, 0.25, 0.27, including phase is independent in [0, 2* PI] on the distribution of random phase Noise variance is the mean to 0, 1 real gaussian white noise, signal to noise ratio of 30 db, 30 db, db, and the observation sample for N, by bartlett, Welch, periodogram spectrum method to calculate the probability of the random process)

说明：  Fruit Fly Optimization

关于粒子群算法的一个很好的程序。欢迎大家共同学习和探讨。(Particle swarm optimization on a good program. Welcome to learn and explore together.)

频谱估计 讲的比较详细 里面的ppt文件还有解释 值得一看(spectrum estimation)

应用matlab实现数值积分，这是一些基本的源程序，可以根据需要进行调用，对于求解线性、非线性动力学问题来说是最基本的程序(this is some mod about math)