data-mining--concept-atechnique

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)

关于turbo码及其在3G中的应用，对初学者有帮助(about Tubro and its application in 3G)

灭点法进行相机标定有程序有说明还有相关的论文(Destroy the point method for camera calibration program instructions and related papers)

基于SIAR体制的脉冲综合的MATLAB程序，阵列模型是发射阵元19个，接收阵元40个，分布在三个圆环上，信号是线性调频信号，加了多普勒频率的影响。(SIAR system based on pulse-integrated MATLAB program, the array model is the launch array element 19, the receiver array elements 40, distributed in three rings, the signal is linear FM signal, plus the Doppler frequencies.)

永磁同步电动机的矢量控制仿真程序，实现速度闭环和电流闭环，可以直接运行(Permanent Magnet Synchronous Motor Vector Control program, to achieve the speed loop and current loop can be directly run)

说明：  捷联惯导系统放置在室内测试台上做静态测试，测试时间4500s。 1）取前180数据做粗对准（解析对准法）； 2）取第181s~900s数据做精对准（Kalman滤波法）； 3）从第901s开始做纯惯导解算； 4）用国军标的导航系统位置精度评价方法评估系统定位精度（分别计算CEP50 和 CEP95 下的定位精度）。(The strapdown inertial navigation system was placed on the indoor test bench for static test with a test time of 4500s. 1) take the first 180 data for rough alignment (analytical alignment method); 2) accurate alignment of 181s-900s data (Kalman filtering method); 3) pure inertial navigation solution is performed from 901s; 4) the positioning accuracy of the navigation system is evaluated by the method of position accuracy evaluation of the national military standard (the positioning accuracy under CEP50 and CEP95 are calculated respectively).)

动态规划matlab程序，适用于只有一个状态变量的情况(dynamic programming matlab program that applies only to one state variable.)

说明：  用课件方式教你对matlab有快速而全面的认识(Teach you quick and comprehensive understanding of matlab )

Matlab code for node generator in rfid networks

turbo codes simulation