trend

完整的ofdm程序，里面给出了功率谱密度的分析过程，比较精简实用(Ofdm complete procedure, which gives the power spectral density analysis of the process more streamlined and practical)

Matlab绘制子图函数的使用，Matlab绘制子图函数的使用(Matlab rendering the use of subgraph function, Matlab mapping function using subgraph)

本文介绍了一种基于自适应滤波算法的语音信号增强处理的方法。文中在扼要介绍了目前常用的语音增强方法的基础上，重点介绍了采用LMS算法的自适应语音增强系统。对三种LMS算法（基本LMS算法,符号误差LMS算法及NLMS算法）进行仔细研究，并用Matlab仿真实现，验证比较了三种算法的语音增强效果。(In this paper, a system of speech enhancement is discussed based on self-adaptive algorithm. On the basis of presenting an overview of a number of speech enhancement is described in detail based LMS algorithm.This paper researches sorts of LMS algorithms（the basic LMS algorithm,the sign error LMS algorithm and NLMS algorithm） in detail, and compares the three algorithm of speech enhancement effect with Matlab simulation validation.)

position of vehicle maneuvering in lane changing with fuzzy

这是一本基于matlab计算软件的高等数学问题求解教材，很详细的介绍了在matlab环境下来计算一些经典的高等数学问题。(this is a book about solving advanced math problems with matlab software.it introduces how to compute a lot of classic advanced math problems under matlab. )

共振解调的过程如下：首先对采集到的信号进行傅里叶变换，然后利用传感器自身的谐振频率进行分析，对滤波后的信号进行包络，包络以后去除了高频部分，得到包络信号，再对改进的包络信号进一步进行低通滤波，最后对最终得到的信号进行傅立叶变换求其频谱图。共振解调的原理及其过程可以用图2 来进行表述。(The process of resonance demodulation is as follows: First, Fourier transform is performed on the collected signal, and then the resonance frequency of the sensor is used for analysis. The filtered signal is enveloped, and the high frequency part is removed after enveloping to obtain an envelope. The signal is further subjected to low-pass filtering on the improved envelope signal. Finally, the spectrum of the resulting signal is Fourier-transformed. The principle of resonant demodulation and its process can be expressed in Figure 2.)

Directional Weighted median filter for random value impulse noise removal

ARIMA建模，主要包括平稳化、模式识别、模型定阶几个步骤(ARIMA modeling, including smoothing, pattern recognition, model order several steps)

add noise matlab code

说明：  对图像分割，初始轮廓为椭圆。变化的过程中始终以椭圆为约束(For image segmentation, the initial contour is an ellipse.)