rayleigh

产生右图所示图像f1(m,n)，其中图像大小为256×256，中间亮条为128 ×32，暗处=0，亮处=100。对其进行FFT： ① 同屏显示原图f1(m,n)和FFT(f1)的幅度谱图； ② 若令f2(m,n)=（-1）m+n f1(m,n)，重复以上过程，比较二者幅度 谱的异同，简述理由； ③ 若将f2(m,n)顺时针旋转90 度得到f3(m,n)，试显示FFT(f3)的幅 度谱，并与FFT(f2)的幅度谱进行比较； ④ 若将f1(m,n) 顺时针旋转90 度得到f4(m,n)，令f5(m,n)=f1(m,n)+f4(m,n)，试显 示FFT(f5)的幅度谱，并指出其与FFT(f1)和FFT(f4)的关系； ⑤ 若令f6(m,n)=f2(m,n)+f3(m,n)，试显示FFT(f6)的幅度谱，并指出其与FFT(f2)和 FFT(f3)的关系，比较FFT(f6)和FFT(f5)的幅度谱。(Generating an image f1 (m, n) shown in the figure, wherein the image size is 256 256, the intermediate light bar 128 32 0 = dark, bright Department 100. Its FFT: ① screen display picture f1 (m, n) and the FFT (f1) of the amplitude spectrum ② If so f2 (m, n) = (-1) m+n f1 (m, n), repeat The above process, comparing the amplitude spectrum of the similarities and differences between the two, brief reasons ③ If f2 (m, n) 90 degrees clockwise to get f3 (m, n), try to display FFT (f3) the amplitude spectrum and with the FFT (f2) comparing the amplitude spectrum ④ If f1 (m, n) obtained by 90 degrees clockwise f4 (m, n), so f5 (m, n) = f1 (m, n)+f4 (m, n ), try to display FFT (f5) amplitude spectrum, and pointed out its relationship with the FFT (f1) and FFT (f4) of ⑤ If so f6 (m, n) = f2 (m, n)+f3 (m, n) and try to display the FFT (f6) amplitude spectrum, and pointed out its relationship with the FFT (f2) and FFT (f3), comparing FFT (f6) and FFT (f5) amplitude spectrum.)

对于svm进行可视化，清晰地划分了分类超平面以及各个类别(Visualization for SVM, a clear division of the classification hyperplane and each category)

说明：  经典常规波束形成 包含几种方法的对比(Classic conventional beamforming with comparison of several methods)

multiple antenna echnques that is used in wimax is a good tutorial for wimax antenna

利用发动机进气温度、转速等信息通过神经网络模拟得到排气温度等信息(Neural network simulation)

说明：  实现Jakes模型的快衰落仿真，希望对大家的学习有很好的帮助，看过之后给些意见(Jakes model to achieve fast fading simulation, we hope to learn a very good help, give some advice after reading )

matlab 实现leach 实验仿真算法(matlab leach )

说明：  conjugate gradient for solving system of equations

基于matlab将某个灰度值范围内的图像表现的更加突出，形成更好的对比。(Matlab will be a gray value within the image is more prominent, forming a better contrast.)

kalman 演示程序 是kalman 滤波器MATLAB仿真(kalman filter smulation )