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将图像进行主成分分析，并显示第一主成分，方法很好用的(The principal component analysis is performed and the first principal component is displayed.)

说明：  飞行模拟转台伺服系统仿真 S为信号变量 1为正弦 2为阶跃 3为方波(flight simulation turntable servo system simulation S signal to a variable sinusoidal Step 2 for 3 for the square wave)

说明：  调用.csv文件格式或者Excel格式文件实现Matlab数学算法：图像或图形的再现、时域和频域的信号分析和处理(call. Csv file format or Excel format Matlab mathematical algorithms to achieve : images or graphics to recreate the time domain and frequency domain signal analysis and processing)

Sample code for optimization based on Gradient base. include BFGS, Steepest Descent method, DFP method, Conjugate Gradient method ans so on...

计算单载波基带/通频带信号的PAPR(峰均功率比)(PAPR calculation of single carrier baseband/passband signals)

RSSI 定位算法的MATLAB仿真实现(RSSI positioning algorithm matlab)

预失真补偿后的图形,采用快速傅里叶变换（Fast Fourier Transform, FFT） 计算得信号的频率数据，再利用得到的频率数据计算功放预失真补偿前后功率谱密度 样值(Predistortion compensation of graphics, using the Fast Fourier Transform, Fast Fourier Transform and FFT) Calculate signal frequency data, then get the frequency of the power spectral density before and after data computing power amplifier predistortion compensation Sample values)

In this program we calculate the scattering field of a infinite rectangular surface. I use Physical Optic method and compare the result with exact solution.