EM

二自由度水箱液位控制。简单的小程序，简洁易懂。(Two-freedom level control.simple program.)

对信号进行希尔伯特变换及包络分析，实现信号波形的解调(Hilbert transform of the signal and the DEA, the demodulated signal waveform to achieve)

NSC program calculates BER of NSC

SOR法解Poisson方程，通过迭代输出结果并画图，结果包含迭代步数以及无穷范数(Solution of Poisson equation by SOR method, iterative output results and drawing, the result contains iteration step number and infinite norm)

文章讲述了现在韩国的频谱政策和动态频谱接入技术。过去韩国的频谱管理政策需要特权，并且只有一小部分频谱可以公用。随着无线技术的发展，现在，韩国政府，使用了机遇动态频谱接入的新型频谱策略，例如LBT技术用于REID，UWB和FACS等。MIC还考虑如何在DTV过渡完成后，重新分配频谱。新型的无线电技术如认知无线电和SDR将在UHF边带中应用新的服务。MIC试图用一用有效地方式开放频谱并接受新技术用于频谱策略中。(In this paper, we introduce spectrum policies and dynamic spectrum access technologies in Korea. In the past, Korea spectrum management was the command and control with exclusive usage rights and small portions of spectrum commons bands. With the development of the radio technologies, Recently, Korea government, MIC(ministry of information and com- munication), has been adopting new spectrum policies based on dynamic spectrum access technology such as LBT(Listen Before Talk) for RFID, UWB, and FACS(Flexible Access Common Spectrum) etc. MIC is also considering spectrum reallocation of digital dividend bands after DTV transition. New radio techniques such as cognitive radio and SDR will be applied to new services in this UHF band. MIC is trying to open the radio spectrum in an efficient way and adopt new technology into spectrum policy. Thus MIC is extending the open spectrum such as spectrum commons and spectrum liberalization bands. )

Three phase induction motor in dq frame simulation

说明：  信号与系统相关源代码 希望能给大家带来帮助(signal and system)

双站SAR成像的例子，里面解决了非线性问题(an example of bisar,in order to deal with the nonlinear problem)

的基本函数介绍符号数据、内联函数、unit 数组、稀疏类）(Basic functions introduced symbolic data, inline functions, unit array, sparse class))

电力系统标准测试系统，30节点系统，格式完全正确，可以方便的用来分析计算。(Power system standard test system, 30-bus system, the format entirely correctly, can easily be used to analyze the calculation.)