shuangkui002

Single Phase Real Power Filter

在matlab的小波分析中标,设计一个包含若干不连续点的一维信号，利用小波变换的模极大提取它的阶梯型边界点。(Matlab wavelet analysis in the successful design that contains a number of discrete points of one-dimensional signals, using wavelet transform modulus maxima extraction of its ladder-type boundary points.)

该程序仿真了机载雷达对地面微动目标成像过程及结果。验证了微动的成对回波理论及微动对雷达成像造成的影响，改变微动参数，可看到鬼影点、灰度条带、直线圆列等由于微动参数不同而产生的不同现象。(refer to the chinese introduction)

优秀论文及配套源码。Hilbert-Huang变换(HHT)是一种新的非平稳信号处理技术，该方法由经验模态 分解(EMD)与Hilbert谱分析两部分组成。任意的非平稳信号首先经过EMD方法处理后被分解为一系列具有不同特征尺度的数据序列，每一个序列称为一个固有模态函数(IMF)，然后对每个IMF分量进行Hilbert谱分析得到相应分量的Hilbert谱，汇总所有Hilbert谱就得到了原信号的谱图。该方法从本质上讲是对非平稳信号进行平稳化处理，将信号中真实存在的不同尺度波动或趋势逐级分解出来，最终用瞬时频率和能量来表征原信号的频率含量。 本文研究了基于HHT的暂态电能质量扰动检测方法，介绍了HHT的基本原理和利用HHT检测电能质量多扰动信号的实现方法。仿真试验表明该方法可以实时检测扰动的起止时刻，持续时间和扰动幅度，适用于电能质量多扰动的监测和辨识系统。 (Hilbert-Huang Transform(HHT) is a new non-stationary signal processing technology，including the Empirical Mode Decomposition(EMD) and Hilbert spectral analysis．In this method，arbitrary non-stationary signals was divided into a series data sequence with different characteristic scales after the first EMD treatment，each sequence is called an intrinsic mode function(IMF)，and then each IMF component gained corresponding the Hilbert spectrum though Hilbert spectrum analysis，a summary of all Hilbert spectrum assembled to the spectra of the original signal．In essence，this method is a stable processing for non-stationary signal，which decomposed the different fluctuations or trends in the signal in rum，and represented the frequency content of the original signal using the final instantaneous frequency and energy． This paper study a method to detect power quality disturbances based on the HHT，in which the principle and the realization of the HHT and the realization of power quality disturbance)

plotsmithchart Usage:where Zl is the Load Impedence (possibly complex)and Zo is the Characteristic Line Impedence Plots a smith chart, along with the reflection coefficient circle and the line of intersection with resistive component equal to 1

this file is useful in finding snr ratio

这是EMD分解的例程工具箱，里面含有与EMD分解有关的函数以及例程(This is the EMD decomposition routine toolbox, which contains EMD decomposition of the relevant function and routine)

非常好的MATLAB学习书籍，图像处理.非常值得下载，一定能对用户有很大帮助。(A very good book to learn MATLAB, image processing. Well worth downloading certainly of great help to users.)

报童问题(负指数分布) 几个参数： 卖出报纸挣a元，退回报纸赔b元 卖报量y,订报量z，订报量上限z_up 观察期的总天数t,用于积累天数的ti 总的平均损失量ave_loss，供过于求损失loss1,供小于求损失loss2,ave_loss=loss1+loss2 最佳订报量superz,最小损失量ave_loss_min (newsvender)

信息理论与编码——关于二进制熵的matlab仿真程序(Information Theory and Coding- on the binary entropy matlab simulation program)