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WAVE READ FILE .M FILE

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.)

MUSIC算法的频率谱估计 包含1个目标信号和2个干扰信号(Frequency Spectrum Estimation of MUSIC Algorithm Contains one target signal and two interference signals)

计算任意一个矩阵的模最大最小值。在matlab的m文件编程，实现(Any calculation of maximum and minimum modulus of a matrix. M-file in matlab programming,)

2d fdtd code with tf sf interface and upml ABSORBING BORDERS IN MAT LAB

建立了四旋翼飞行器悬停姿态动力学模型，并进行了仿真分析，在开环控制的前提下分析了结构增稳和橡筋阻尼方法对飞行器平台姿态定性的影响，并提出了一种开环控制下实现稳定悬停的策略。(The establishment of a four-rotor aircraft hovering attitude dynamics model and simulation analysis, under the premise of open-loop control analyzes the impact of structural and elastic damping augmentation method for aircraft platform attitude qualitative and presents an open loop realization of stable hover control strategy.)

在matlab中解决凸优化问题时所要用到的凸优化工具箱 SeDuMi的使用指南和编程教程(n matlab solving convex optimization problem to use convex optimization toolbox SeDuMi user guide and programming tutorials)

汉诺塔即时动画演示，程序动画可以给出每一步的移动过程(The hanoi tower)

convert numbers into words in excel

小波包分解的MATLAB代码，代码有详细的注释，容易看懂(MATLAB code for wavelet package decomposition)