chengxu

基于MATLAB 的数值分析方面的源代码，非常实用，对于数值分析方面得研究来说(MATLAB-based numerical analysis of the source code, very useful for the numerical analysis for a study)

认知无线电频谱感知方面的文章，希望对你有用(Cognitive radio spectrum sensing for articles, I hope useful to you)

说明：  原始语音信号的时域图形的MATLAB程序(The original speech signal time domain graph)

里面含有二十多个子程序，有助于学习MIMO与OFDM。(To learn with MIMO OFDM.)

determining the coefficients of the reaction against a system by the method of genetic algorithms

matlab 数字信号处理实验1代码全部 东南大学(Digital signal processing matlab code experiment a whole Southeast University)

matlab写的贝叶斯的压缩感知的代码，应用范围广泛，很不错。(matlab write code compression Bayesian perception, wide range of applications, very good.)

基于压缩感知的OMP算法，用于信号重建，适合初学者(Based on the compression perception OMP algorithm for signal reconstruction, suitable for beginners)

MATLAB的源代码（某大牛写的），完成了70 的功能。(MATLAB source code (written by a large ox), completed 70 of the function.)

The modeling and attitude stabilization control problems of a four-rotor vertical takeoff and landing unmanned air vehicle (UAV) known as the quadrotor are investigated.The quadrotor’s attitude is represented by the unit quaternion rather than Euler angles to avoid singularity problem. Taking dynamical behavior of motors into consideration and ignoring aerodynamic effect, a nonlinear controller is developed to stabilize the attitude.The control design is accomplished by using backstepping control technique.The proposed control law is based on the compensation for the Coriolis and gyroscope torques. Applying Lyapunov stability analysis proves that the closed-loop attitude system is asymptotic stable. Moreover, the controller can guarantee that all the states of the system are uniformly ultimately bounded in the presence of external disturbance torque.The effectiveness of the proposed control approach is analytically authenticated and also validated via simulation study.