two

现代信号处理 一个序列为 ，使用FFT分析其频谱： 1） 使用不同宽度的矩形窗截短该序列为M点长度，取M分别为： a) M=20 b) M=40 c)M=160 ；观察不同长度的窗对谱分析结果的影响； 2）使用汉宁窗、哈明窗重做1） 3）对三种窗的结果进行理论分析及比较。并绘出相应的幅频特性曲线 (Modern signal processing a sequence, using FFT analysis of the spectrum: 1) the width of the rectangular windows with different truncated point of the sequence length of M, take M, respectively: a) M = 20 b) M = 40 c) M = 160 observation windows of different lengths affect the results of spectral analysis 2) Hanning window, Hamming window redo 1) 3) the results of three windows and compare the theoretical analysis. And draw the corresponding amplitude-frequency characteristic curve)

讲述了MIT雷达的发展历史及工作原理，有极佳参考价值(About the history of the development of the MIT radar works, there is an excellent reference value)

matlab实现lsqr算法的源码，有强烈的参考价值，可用于地球物理反演。(matlab realize lsqr algorithm source code, there is a strong reference value, can be used for geophysical inversion.)

Tests for <code>KeyPairGenerator</code> class constructors and methods.

压缩包包含4个天线选择算法的仿真，最佳选择，范数选择，递增选择和递减选择(Compressed package includes four antenna selection algorithm simulation, the best choice, norm selection, increasing choice and decreasing options)

自己编写的QPSK调制与解调，内含matlab-figure-file、matlab-M-file和得出的jpg格式图形！(I have written QPSK modulation and demodulation, containing matlab-figure-file, matlab-M-file and come to the jpg format graphics!)

用matlab画出剪头的方法，两个点之间的剪头画法(plot arrow using matlab)

MATLAB开发的对冲的权证,用于金融判断权证的套利(MATLAB development of the hedge E, E judgment for the financial arbitrage)

缺失数据的填补函数，用来估计缺失的数据。 single and mutiple imputation(Solves approximation to one of several pdes to interpolate and extrapolate holes in an array )

光栅的矩阵传输MATLAB程序，是用来求折射率周期分布的光栅的反射率和折射率的(MATLAB program grating transfer matrix is ​ ​ used to find the grating period distribution of the refractive index and refractive index of the reflectance)