zhengxianbo

微信功能实现通信机制沟通你我他.在你我他之间架起沟通的桥梁(Micro-channel communication mechanism to achieve functional communication you and me. Between you and me, he acted as bridges)

说明：  对信号进行zak变换，计算速度快结果准确，开发环境为matlab(Zak transform the signal to calculate speed and accurate results, the development environment for matlab)

detecting color and place in the picture. this project can find the place of object with red and blue color.

滤波器，可随意调节输入信号或滤波器参数，有时域频域两种显示(Filter, adjustable input signal or filter parameters, and sometimes two display domain and frequency domain)

设计一维纳滤波器。 （1）产生三组观测数据，首先根据s(n)=as(n-1)+w(n)产生信号s(n)，将其加噪(信噪比分别为20dB，10dB，6dB)，得到观测数据x1(n)，x2(n)，x3(n)。 （2）估计xi(n)，i=1,2,3的AR模型参数。假设信号长度为L，AR模型阶数为N，分析实验结果，并讨论改变L，N对实验结果的影响。 (Design a Wiener filter. (1) generate three sets of observations data, first according to s (n) = as (n-1)+w (n) to generate a signal s (n), which add noise (SNR respectively 20dB, 10dB, 6dB), obtained observation data x1 (n), x2 (n), x3 (n). (2) estimate xi (n), i = AR model parameters 1,2,3. Assuming the signal length L, AR model of order N, analysis of experimental results and discuss changes affect L, N of the experimental results.)

天线线阵的优化，优化副瓣，讲解详细，遗传算法,注释很多(Linear array antenna optimization, optimization sidelobes explain in detail, the genetic algorithm. . . . . . )

matlab中的A-D检验是一种有效而重要的检验方法，本文介绍了具体的内容及步骤，让大家了解原理。(A-D TEST IS AN IMPORTANT TEST IN MATLAB.)

SOURCE CODE OF CALCULATOR WITH MATLAB

本程序基于matlab，能够实现对视频中图像进行抠图，并能将提取出的前景图像合成到新的背景上。(Matting, and can extract the foreground image is synthesized into a new background video image.)

computed distribution of the magnetic field Hz within an wvolving 2D dielectric mircopille with initial r=667nm run in COMSOL with Matlab