ASoftwareDefinedGPSandGalileoReceiver

Chebyshev polynomial

In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet.

非线性函数拟合——利用遗传算法来优化BP神经网络，利用神经网络开发包实现图形化的神经网络模拟，使得神经网络原理更直观，可用于教学，也可用于实际神经网络训练，内附详细帮助文件。(Non-linear function fitting- using genetic algorithms to optimize the BP neural network, neural network development package to implement graphical neural network simulation, neural network theory makes more intuitive, can be used for teaching, but also can be used for the actual neural network training, in with detailed help files.)

A simple source code to learn Matlab GUI

用MATLAB模糊逻辑工具箱设计模糊控制器，并用SIMULINK仿真(MATLAB Fuzzy Logic Toolbox fuzzy controller design, and use SIMULINK)

double_pendulum_init initial for the pendulum

说明：  病态方程的正则化，用matlab实现正则化算法。(Morbid equation, regularization, with the regularization algorithm matlab implementation.)

通过此程序可得到二维坐标系中的油膜力及其分布曲线，使用者可更改设计变量观察油膜力的曲线变化(This program can be obtained by curve film strength and profile of the two-dimensional coordinate system, the user can change the design variables observed oil film force)

说明：  使用快速傅里叶逆变换，分析离散时间信号中频率分辨率和信号的样本数之间的关系，并通过不同的滤波器进行对比。(The relationship between the frequency resolution and the number of samples in the discrete-time signal is analyzed by using the inverse fast Fourier transform, and compared by different filters.)

This interactive game allows you to manipulate and view the rubik s cube in 3D with the click of your mouse. If you get stuck, just click to watch the cube solve itself. Or, just "rearrange the stickers" and start over.(This interactive game allows you to manipulate and view the rubik s cube in 3D with the click of your mouse. If you get stuck, just click to watch the cube solve itself. Or, just rearrange the stickers and start over.)