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OFDM系统，瑞利信道，很有用； OFDM系统，瑞利信道，很有用；(OFDM systems, Rayleigh Road, very useful OFDM systems, Rayleigh Road, very useful )

matlab主成分分析的几个案例 包括从协方差矩阵或相关系数矩阵出发求解主成分 从样本观测值矩阵出发求解主成分(Principal component analysis matlab several cases, including the covariance matrix or correlation matrix to solve the main ingredient of departure from the starting sample observation matrix solving the main ingredient)

基于瞬时无功功率理论的谐波检测ip-iq改进方法，值得学习(Based on instantaneous reactive power theory, ip-iq improvement of harmonic detection method, it is worth learning)

应用于复杂网络分析时采用matlab代码的节点介数(Node betweenness complex network analysis)

冈萨雷斯第二版书+答案+Matlab版的代码(The Consadole Juarez second edition of the book+ answer+Matlab version code)

lambert轨道转移，根据两点位置矢量和飞行时间确定相应速度矢量(Lambert orbit transfer, according to two position vector and the flying time to determine the corresponding velocity vector)

If we have two individually sorted vectors "a" and "b" but they are not sorted with respect to each other and we want to merge them into vector "c" such that "c" is also a sorted vector. Then c=mergesorted(a,b) can be used. (If we have two vectors individually sorted "a" and "b" but they are not sorted with respect t o each other and we want to merge them into vector "c" such that "c" is also a sorted vector. Then c = mergesorted (a, b) can be used.)

二次多项式拟合大地水准面，采用matlab编写的，关于拟合出来的图像感觉有些问题。。希望大家指正(Quadratic polynomial fitting geoid, using matlab prepared some questions about the fitting out of the picture feel. . I hope you correct)

generation of linear frequency modulation signal in matlab and how to use it in the process of the gound penetrating radar

对于周期图的功率谱估计,当数据长度N太大时,谱曲线起伏加剧, 若N太小,谱的分辨率又不好,因此需要改进。两种改进的估计法是 平均周期图法和平滑平均周期图法。Bartlett法:Bartlett平均周期图 的方法是将N点的有限长序列x(n)分段求周期图再平均。(For the power spectrum estimation of the periodogram, when the data length N is too large, the spectral curve fluctuation intensifies,   If N is too small, the spectral resolution is not good, so need to be improved. The two improved estimates are   Average Period Graph and Smooth Mean Period Graph. Bartlett method: Bartlett average cycle chart   Is to re-average the finite-length sequence x (n) of N points by periodogram.)