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本文讲述锁相环的工作原理，锁相环路实际上是一个相差自动调节系统。(This article describes the working principle of PLL, PLL is actually a difference between the automatic adjustment system.)

说明：  LDPC的编码，硬解码，软解码，以及性能仿真。(LDPC coding, hard decoding, soft decoding, and performance simulation.)

包括灰色模型主程序灰色模型被调用子函数，该子函数命名为(Including gray model is called the gray model main subroutine, the subroutine named)

实现了P4多相码的产生和脉压，互补码的产生和自相关输出(The realization of the P4 polyphase code generation and pulse pressure, complementary code generation and auto-correlation output)

非线性最小二乘法Matlab实现 f=x(1)*K^x(2)*L^x(3)-b Cobb-Douglas生产函数(Matlab nonlinear least square method to achieve f = x (1)* K ^ x (2)* L ^ x (3)-b Cobb-Douglas production function)

本程序主要功能是idl调用matlab程序，大大增加了idl的图像/形处理功能，应用更广泛(This procedure is the main function of matlab to call idl procedures, has greatly increased the idl image/shape processing, the application of more extensive)

Matlab官方文档：Matlab图形工具箱ReleaseNote(Matlab official documents : Matlab graphics toolbox ReleaseNote)

在matlab上编写的关于人工神经网络中的线性神经网络的源程序例子(In matlab prepared on artificial neural networks linear neural network source code examples)

matlab实现，绘制二维及三维HHT谱图(Matlab implementation, draw 2D and 3D HHT spectrum)

数学方法是部分子空间法，多机电力系统仿真及其潮流计算，用于特征降维，特征融合，相关分析等。( Mathematics is part of the subspace, Multi-machine power system simulation and flow calculation, For feature reduction, feature fusion, correlation analysis.)