Linux菜鸟专用资料 595页

Excel 内部所用的全部Icon,并且进行分类，可以直接使用.-internal use Excel all the Icon, and classification can be used directly.

现代通信系统要求通信距离远、通信容量大、传输质量好。作为其关键技术之一的调制解调技术一直是人们研究的一 个重要方向。讨论和仿真实现了基于FPGA的数字化DPSK调制解调系统。用Altera公司的FPGA开发平台Quartus II 3.0实现了一 个对基带信号的DPSK调制解调系统模型的仿真。(Modern communication systems require communication distance, communication capacity, transmission quality. As part of its one of the key technologies of modem technology is that people have been an important direction of research. Discussion and simulation of FPGA-based digital DPSK modulation and demodulation system. FPGA using Altera)

说明：  matlab画传输线上电压分布曲线图：传输线特性阻抗Z0=50，求线上电压分布，并画出与z 的关系曲线（用matlab 划出曲线图）。(Matlab draws the curve of voltage distribution on transmission line: the characteristic impedance of transmission line Z0 = 50, calculates the voltage distribution on transmission line, and draws the curve of relationship with Z (draws the curve with matlab).)

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HHT主要内容包含两部分，第一部分为经验模态分解（Empirical Mode Decomposition，简称EMD），它是由Huang提出的；第二部分为Hilbert谱分析（Hilbert Spectrum Analysis，简称HSA）。简单说来，HHT处理非平稳信号的基本过程是：首先利用EMD方法将给定的信号分解为若干固有模态函数（以Intrinsic Mode Function或IMF表示，也称作本征模态函数），这些IMF是满足一定条件的分量；然后，对每一个IMF进行Hilbert变换，得到相应的Hilbert谱，即将每个IMF表示在联合的时频域中；最后，汇总所有IMF的Hilbert谱就会得到原始信号的Hilbert谱。(The main content of HHT includes two parts. The first part is Empirical Mode Decomposition (EMD), which was proposed by Huang, and the second part is Hilbert Spectrum Analysis (HSA). Simply speaking, the basic process of HHT processing non-stationary signals is: firstly, the given signal is decomposed into several intrinsic mode functions (represented by Intrinsic Mode Function or IMF, also known as intrinsic mode functions), which are components satisfying certain conditions; secondly, Hilbert transform is applied to each IMF. The corresponding Hilbert spectrum is obtained, that is, each IMF is represented in the joint time-frequency domain; finally, the Hilbert spectrum of the original signal is obtained by summing up the Hilbert spectrum of all IMFs.)

jcl samples

说明：  PID控制模型，可用于代码生成及模型开发(PID proportional-integral-derivative control)

说明：  实现信号加窗，加的窗有汉宁窗、海明窗等其他窗(Realization of signal windowing)

关于SDRAM的文件为了下载传上来的 这回够20字可以下了吗(About the pass file to download to the SDRAM)

说明：  进行有限元仿真蠕变模拟，该子程序顺利通过测试，可得到应力应变等数据(Through the finite element simulation creep simulation, the subroutine passes the test successfully, and the data of stress and strain can be obtained)