chazhiyunihe

This scheme is also called DPSK since MZ modulator provides the “digital” phase modulation if it is biased at null instead of quadrature. No coherent detection is needed if data is differentially pre-coded.

二阶粒子群，比pso更加精确更加灵敏地优化函数。在标准pso算法中，微粒的飞行速度仅仅是微粒当前位置的函数，而二阶粒子群算法中微粒飞行速度的变化与微粒位置的变化有关(Second swarm, more sensitive and more accurate than pso optimize function. Pso algorithm in the standard, the particle particle flight speed is only a function of the current position, the second particle swarm flying speed of particles in the particle changes related to changes in the position)

计算数学当用常用的几个计算方法的matlab的程序代码，这些代码有时候比较有用(Computational Mathematics when using matlab several calculation methods commonly used program code, which is sometimes more useful)

使用C语言在matlab中编程解决非线性回归问题(Nonlinear Regression)

在原有matlab程序的基础上增加一个功能即原有程序在未统计之前，一个数默认频次为一，但是这个可以在频次不为1的情况下统计总的频次(Add a function on the basis of the original matlab program that is not before the original program statistics, a number of default frequency is one, but this can count the total frequency in the frequency is not a case)

小波包分析提取振动信号中的特征频率，使用混沌与分形分析的例程，有井曲线作为输入可计算其地震波的衰减。( Wavelet packet analysis to extract vibration signal characteristic frequency, Use Chaos and fractal analysis routines, There is a well attenuation curve as input to calculate its seismic waves.)

Matlab version seven complete guide

AN ANN BASED APPROACH FOR OPTIMAL PLACEMENT OF DSTATCOM FOR VOLTAGE SAG MITIGATION(Voltage sag has been considered as one of the most harmful power quality problem as it may significantly affect industrial production. This paper presents an Artificial Neural Network (ANN) based approach for optimal placement of Distribution Static Compensator (DSTATCOM) to mitigate voltage sag under faults. Voltage sag under different type of short circuits has been estimated using MATLAB/SIMULINK software. Optimal location of DSTATCOM has been obtained using a feed forward neural network trained by post-fault voltage magnitude of three phases at different buses. Case studies have been performed on IEEE 14-bus system and effectiveness of proposed approach of DSTATCOM placement has been established)

压缩感知中基于m序列的测量矩阵的构成，代码在matlab上进行了仿真，效果好于传统高斯矩阵。代码有详细注释，易懂(This codes described measurement matrix based on m sequences in Compressed sensing. It has good result in matlab environment and the effect is better than the traditional Gaussian matrix. Code has detailed notes, so ti is easy to understand.)

非线性扩展卡尔曼滤波，在catr模型中的应用。(extending kalman filtering,cstr)