test

matlab program that read an image and shows its 2d fourier spectrum

1.分别在两个图中画出δ(n)和δ(n-2)，其中-10≤n≤10，画出U（n）其中-10≤n≤10。 2.分别在两个图中画出x1(n)=cos(2π×20×0.01×n)，0≤n≤10和x2(n)=(0.8)n，1≤n≤6。 3.由上一题，计算y(n)=x1(n)+x2(n)，并画图。(1. Draw the figure at two δ (n) and δ (n-2), where-10 ≤ n ≤ 10, draw the U (n) where-10 ≤ n ≤ 10. 2. Respectively in the two Draw the figure x1 (n) = cos (2π × 20 × 0.01 × n), 0 ≤ n ≤ 10 and x2 (n) = (0.8) n, 1 ≤ n ≤ 6. 3. from the previous question, calculate y (n) = x1 (n)+ x2 (n), and drawing.)

说明：  Shrink the image by a factor of two using the bilinear interpolation and zoom this image to the original size again. Does this image differ from the original one?

EEMD在EMD的基础上进行添加高斯白噪声，VMD相对于EEMD时频分解效果更好，有效的抑制了模态混叠和端点效应(EEMD adds Gaussian white noise on the basis of EMD, and VMD has better effect on time-frequency decomposition than EEMD, effectively suppressing modal aliasing and endpoint effects)

本代码为《精通matlab7》的配套代码，方便大家直接运行使用。(The code for the " proficient matlab7" supporting code, easy to use you to run directly.)

感应双馈发电机系统的仿真，本程序的性能已经超过其他算法，多抽样率信号处理。( Simulation of doubly fed induction generator system, This program has exceeded the performance of other algorithms, Multirate signal processing.)

说明：  基于K-L算法的人脸识别matlab程序代码(KL-based face recognition algorithm matlab code)

Denmark Technical University的大牛Hansen，第二版风力机空气动力学。(Denmark Technical University' s Daniel Hansen, the second edition of wind turbine aerodynamics.)

EZLink_Modem_main driver

说明：  经验模态分解的使用方法，详细易懂，含代码示例。(Empirical mode decomposition method of use, detailed and easy to understand, including code examples.)