test_quality

Traffic channel simulation resolved 1/4 bit issue.

基于边缘梯度的图像匹配，实现对寻找块图像的精确寻找(Gradient based edge image matching, to achieve the exact image of the search block to find)

用于车辆弯道避障的仿真试验，本文件包含主程序和两个函数(Obstacle avoidance for vehicle turn simulation test, books document the main program, in addition to the two functions)

straight line using matlab

hoffman channel coding project

形态学的膨胀，腐蚀，细化的MATLAB的源代码，对初学者有用(Morphological expansion, corrosion, thinning of MATLAB source code, useful for beginners)

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.

让初学者可以更加容易了解PCA算法的基本运行过程(For beginners can more easily understand the basic operation process of PCA algorithm)

classification Réseau de neurones

A new robust watermark embedding into wavelet DC components