good

This function calculates discrate fourier transform for vector using the "Fast" method . (recursion )

这个matlab源程序 系统详细的描述了 滤波器模型的计算方法(The matlab source system, a detailed description of the calculation method filter model)

简单潮流计算：应用牛顿拉夫逊法。可以准确得到各节点电压向量大小，首末端功率，支路功率损耗(Simple flow calculation: The Newton Raphson method. Can get the exact size of the node voltage vector, the first end of the power, slip power loss)

说明：  灰色控制 灰色控制 matlab(Control gray gray control matlab)

很有用的一个资料，可以帮助你更加深入的了解VC(a very useful information, I can help you more in-depth understanding of VC)

信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、fir和Lattice结构；IIR滤波器设计包括模拟和数字低通、高(Basic knowledge of signals and systems, including continuous signal with the model, discrete signals and model common signal, including Z Transform Transform, Chirp Z Transform, FFT transform, DCT transform and Hilbert transform, etc. discrete system architecture including IIR, fir and Lattice structure IIR filter design, including analog and digital low-pass, high-)

说明：  双极化多普勒天气雷达地物杂波时域和频域抑制的研究（硕士学位论文）(Dual-polarization Doppler weather radar ground clutter suppression in time domain and frequency domain studies (Master thesis))

It is to simulation SNR of UWB.

2FSK是利用数字基带信号控制在波的频率来传送信息。经过调制后的2FSK数字信号通过两个频率不同的带通滤波器f1、f2滤出不需要的信号，然后再将这两种经过滤波的信号分别通过包络检波器检波，最后将两种信号同时输入到抽样判决器同时外加抽样脉冲，最后解调出来的信号就是调制前的输入信号。(gudi hduidf hdag sdd w)

这是一篇讲述信号检测与估计方法的很好的文章，建议认真阅读！(This is a very good article about the signal detection and estimation methods, it is recommended to carefully read!)