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Hilbert 黄变换代码,主要实现黄变换的分解和谱分析(Hilbert Huang Transform code, the main achievement of Huang transform decomposition and spectral analysis)

matlab下快速傅里叶变换的分析及代码。(The matlab fast Fourier transform analysis and code.)

matlab 学习技巧，现在把我用的，也就是对我帮助很大的留个文件传上去，希望对大家有用，第四工程数学应用(matlab learning skills, and now I use, which is a great help to me to leave a document passed up, we want to be useful, the fourth application of engineering mathematics)

对采集到的信号进行快速傅里叶变换，可以实现对信号频谱分析(The collected signals fast Fourier transform, spectral analysis of the signal can be achieved.)

matlab环境下的delete函数的用法，以及colormap函数的用法简介(the use of the function delete in matlab)

无限大障板下的四边简支板的空间辐射声场计算，瑞利积分(Quadrilateral space radiation sound field calculation of simply supported plate, Rayleigh integral)

This file compares three different versions of the Kalman filter. The Kalman filter is used for recursive parameter estimation. The Kalman filter can handle noisy measurements. The first implemented filter (fcn_KF) is the Kalman filter with standard update of the covariance matrix P. The covariance matrix reflects the uncertainties of the predictions. To improve the numerical stability Potter developed a square root update (fcn_KF_SRP) of the covariance matrix P. Another version is the square root covariance update via triangularization (fcn_KF_SRT). This file generates a model. Then the three Kalman filters perform an estimation of the model parameter. At the end the results are compared. Sources: Simon, D. (2006): Optimal state estimation Kaminski, P. (1971): Discrete Square Root Filtering: A Survey of Current Techniques Golub, G. (1996): Matrix Computations

实现了用burg法进行功率谱估计，并比较它的结果(Burg achieved by power spectrum estimation method, and compare its results)

矩形块的三角形单元的有限元计算程序，实现了单元网格自动剖分，后处理后自动绘图等(Rectangular block triangular element finite element program)

模拟渗流集群效应的基本规律，欢迎大侠们的指导和讨论(Simulation of the basic rules of the seepage cluster effect, welcome the guidance and discuss the warrior)