GuideWave

一份英文的讲义，讲述了在多径条件下多普勒频移对无线通信的影响。并对各种条件用MATLAB进行了仿真。(An English lecture, described the conditions in the multi-path Doppler frequency shift of the impact of wireless communications. Various conditions and conducted a simulation using MATLAB.)

为了提高通信系统的信息传输速率，人们提出了UWB通信系统，即Ultra-Wideband 通信系统。在UWB系统中，信号的带宽一般都在GHz的量级，这么宽的带宽造成了UWB系统和现有的通信系统频谱的重叠。为了降低对现有通信系统的影响，UWB信号的设计需要满足一定的频谱模板。如果一个信号的频谱基本满足频谱模板的规定（即在绝大部分频段内功率小于规定区间的上限），我们可以认定其为一个UWB信号。(In order to improve communication systems, information transmission rate of UWB communications systems have been proposed, namely, Ultra-Wideband communication systems. In the UWB system, the signal bandwidth will generally be in the order of GHz, caused such a wide bandwidth of UWB system and the existing communications system spectrum overlap. In order to reduce the impact of the existing communication systems, UWB signal design needs to meet certain spectral mask. If a signal spectrum can basically meet the spectral mask (that is, in most of the provisions of band power is less than the maximum range), we can assume it as a UWB signal.)

matlab环境下实现局部均值分解（LMD）(matlab environment to achieve local mean decomposition (LMD) )

社交网络度中心性算法，按节点的度值求出节点的编号(Social network centricity algorithm, according to the node degree of the node number)

用MATLAB编写的EMD（经验模态分解）例程。实现了Hilbert黄变换、经验模态分解等理论算法，里面包含具体应用。(It is EMD sample codes. The Hilbert-Huang transform is coded by Matlab. And the EMD samples are included.)

计算静气动弹性的程序，主要功能包括计算q，和alpha 静稳定性以及表面诱导阻力(Static aeroelastic calculation procedures, the main features include computing q, and alpha-induced static stability and surface resistance)

包含CV、CA、Single、当前、恒转弯速率、转弯模型，包含了阵列信号处理的常见算法，小波包分析提取振动信号中的特征频率。( It contains CV, CA, Single, current, constant turn rate, turning model, Contains a common array signal processing algorithm, Wavelet packet analysis to extract vibration signal characteristic frequency.)

利用FFT进行滤波，可以选取任意频带数据，并恢复响应频带数据的时程信号(Using FFT filtering, can choose any bands data, and restore the time history of response frequency band data signal)

说明：  实现图像数据的读入实现图像数据的读入实现图像数据的读入

Frequency analysis using mordern methods