PCA-SIFT

产生quadratic和ikeda混沌时间序列的matlab程序(Generate quadratic and Ikeda chaotic time series matlab program)

说明：  一个可以实现图像的高频提升MATLAB程序

高等应用数学问题的MATLAB求解 一书的经典课件 编者自己写的哦(Higher Applied Mathematics problems using MATLAB in a book classic courseware Editor written)

求解随机动态规划的MATLAB程序，有需要的请下载(Solving stochastic dynamic programming)

用MATLAB编程实现巴特沃兹低通、带通滤波器(Using MATLAB programming巴特沃兹low-pass, band-pass filter)

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.

利用matlab软件得到二维的星形曲线，画出其图像(Using matlab software is a two-dimensional star graph, draw its image)

matlab有关数学建模的资料，在数学建模中有很大的帮助(Matlab relevant mathematical modeling of the material, in mathematical modeling a lot of help )

matlab ppm调制的系统仿真，测试误码率等，用高斯信道来实现。(matlab ppm modulation system simulation, testing, error rate, with Gaussian channel to achieve.)

说明：  二维双凹激光振荡，采用菲涅尔衍射和fox-li方法，得到两维幅度和相位输出。考虑镜面倾斜的情况。(Two-dimensional double-concave laser oscillation, using Fresnel diffraction and the method of fox-li, the two-dimensional amplitude and phase output. Consider the case of mirror tilt.)