nhungvanban

计算上田阵子的最大利亚普诺夫函数的matlab源码程序, 是确定系统的常微分方程。(the matlab code is using to caculat duffing the max lyapunvo about determined duffing system .)

数字变频器仿真，能将信号的频率在一定范围内变频。(the stimulation of Digital Convert,which can change the frequence of signal )

二元ldpc译码器 min-sum算法 迭代次数固定 输入信号长度一帧512bits(binary ldpc decoder. min-sum algorithm。fixed iter number.512 bits/frame)

：介绍了扩展卡尔曼滤波算法和无迹变换(unscented transformation，UT)算法，并对扩展卡尔曼滤波算法(EKF)和无 迹卡尔曼滤波算法(UKF)进行比较，阐明了UKF优于EKF。在此基础上，提出了一种基于Unscented变换(uT)的高斯和滤 波算法，该算法首先通过合并准则得到适当个数的混合高斯模型，逼近系统中非高斯噪声的概率密度(: Introduction of the extended Kalman filter algorithm and unscented transform (unscented transformation, UT) algorithm, the extended Kalman filter algorithm (EKF) and unscented Kalman filter (UKF) for comparison to clarify the UKF is superior to EKF. On this basis, we propose an approach based on Unscented Transform (uT) and the Gaussian filtering algorithm, which first of all, by merging the appropriate number of criteria to be a mixture of Gaussian model, which was close to the system of the Central African Gaussian noise probability density)

接收信号为加噪声的QPSK信号，通过球的维纳解，实现系统辨识，达到滤波的目的。(Received signal is the QPSK signal plus noise, the Wiener solution through the ball, to achieve system identification, to achieve the purpose of filtering.)

说明：  一个Foxmail的辅助工具 SmartFox ，实现闪存“随身邮”功能，用来解决使用闪存时foxmail不提示已使用帐号的问题。(an auxiliary tool SmartFox achieve flash "Walkman Post" feature, intended to address the use of flash when I have not suggested the use of the account.)

说明：  matlab 仿真实例：六自由度机器人源程序(matlab source robot simulation six degrees of freedom. rar)

PMSM矢量控制系统 id=0 磁场定向控制(pmsm Vector control system)

二色散射模型去雾算法，以及深度图的获取，效果较好(Dichroic scattering model to fog algorithms, as well as the acquisition of the depth map, the better)

该程序用盖氏圆盘方法（GDE）计算均匀直线阵（ULA）中信号源个数估计性能随SNR的变化情况,采用Monte-Carlo模拟。 (estimate the number of source using GDE criterion)