codeurcelp

有关于Matlab实现的频谱分析一篇文章指导(about Spectrum Analyzer in Matlab)

基于matlab的源程序，用于画非线性微分方程杜芬方程的相图(Source program based on matlab, used to draw the phase diagrams of nonlinear differential equation- duffing equation)

An effective implicit time integration scheme was proposed for the fi nite element solution of nonlinear problems in structural dynamics. Various important attributes were demonstrated. In particular, it was shown that the scheme remains stable, without the use of adjustable parameters, when the commonly used trapezoidal rule results in unstable solutions. In this paper we focus on additional important attributes of the scheme, and specifi cally on showing that the procedure can also be effective in linear analyses. We give, in comparison to other methods, the spectral radius, period elongation, and amplitude decay of the scheme and study the solution of a simple ‘model problem’ with a very fl exible and stiff response.

MATLAB数学工具软件 实例简明教程(matlab program course of study)

介绍了 Cohen类双线性时频分布并针对交叉干扰项影响无法完全消除的问题进行了重排时频变换以提取及分辨 含有白噪声和窄带周期干扰的局部放电信号。处理仿真和现场检测到的局部放电超声信号时根据白噪声和窄带 周期干扰信号在时域上的平稳性特性发现重排 Cohen类时频变换方法不仅可以很好地将局放信号和背景噪声以 及窄带周期干扰信号分辨开来,而且大大减弱并抑制了交叉干扰项的影响,保持了更高的时频分辨率和时频聚集 性,从而验证了重排 Cohen类时频变换方法的有效性。 (In order to express the partial discharge ( PD) information of gas insulated switchgear ( GIS) in time-frequency domain, weintroduced theCohen? s class bilinear time-frequency distribution and its reassigned time-frequency transform method to pick up and distinguish theultrasonic signals in field from the whitenoises and narrow band periodic interference signals using the acousticemission ( AE) technology. After the processing of the simulated and PD ultrasonic signals in field, and according to the stationary feature of white noises and narrow band interference signals, wedraw a conclusion that the reassigned time-frequency distribution method can not only distinguish thePD signal from back ground noises and narrow band interference signals, but also decrease and restrain the influenceof cross-items, and acquire better time )

说明：  极点配置控制（PPC）（连续系统离散化）(Pole placement control (PPC) (discretization of continuous systems))

HMM的MATLAB工具箱及来源信息集锦,以MATLAB为主，亦有C++版。此外，包括不少下载网址与信息。( MANY HMM TOOLBOXES AND INFORMATION WITH MATLAB AND C++,etc)

自己编的5种调制信号，LZ复杂度反映的是一个时间序列中，MIMO OFDM matlab仿真。( Own five modulation signal, LZ complexity is reflected in a time sequence, MIMO OFDM matlab simulation.)

很好的一本matlab编程辅导书籍，非常实用！(Good counseling a matlab programming books, very useful!)

基于卡尔曼滤波和粒子滤波的简单比较，用于高机动目标时时定位，以减少精度损失来换取目标跟踪定位时时性。(Relatively simple Kalman filter and particle filter-based positioning for high maneuvering targets time to time, in order to reduce the loss of precision target tracking in exchange for sex time to time.)