fft_plot

The arclength of a general curve in 2 or more dimensions, using discrete points along the curve

混沌时间序列预测程序与文档 包括CC方法、GP方法、Lyapunov指数预测等(Chaotic time series prediction method procedures and documentation, including CC, GP method, Lyapunov index prediction)

说明：  source about the lms algorithem

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

非侵入式的测量骨头的厚度，利用超声导波的方法。(Noninvasive assessment of human jawbone using ultrasonic guided waves)

Image enhancement using dwt

基于蚁群算法的三维路径规划。在三维地图上寻找最优路径！(Ant colony algorithm based three-dimensional path planning. To find the optimal path on the three-dimensional map!)

D-STATCOM仿真模型，三相四线制，同时补偿谐波无功不对称(D-STATCOM simulation model, three-phase four-wire system, while compensating harmonic reactive asymmetry)

滑移率的模拟,应用simulink实现的程序(simulink of U)

pso算法优化向量机，可用于实现参数的最优化实现(pso algorithm optimization vector machine can be used to achieve the optimum parameters to achieve)