lagrangepoly

用Matlab写的四种GPA计算方法 (Four GPA calculation method written in Matlab)

fast fourier transform

是有关小波分析mallat算法，简便实用(Is related to wavelet analysis mallat algorithm, simple and practical)

说明：  基于matlab和声卡采集信号并输出不同的波形，有良好的界面，方便操作(Matlab and sound card based signal acquisition and output of different waveforms, a good interface, easy operation)

EPS的目标电流求法。用一种新的方法求解，和普通的插值法有很大的差别。(Method to EPS target current. With a new method for solving, and the general interpolation method has a great difference.)

格兰杰因果关系检验matlab程序，用于检验时间序列之间是否存在因果关系，很好的计量统计程序。(Granger causality test matlab procedures used to test the time series between whether there is a causal relationship, the good measurement statistics program.)

此时例是关于用matlab实现牛顿法求解非线性方程组，（包含牛顿法、改进的牛顿法.梯度法、最速下降法代码），里面附带可以直接运行的程序。(At this case is about solving nonlinear equations using matlab Newton, (including Newton, Newton method to improve the code), which comes with the program can be run directly.)

returns the envelope of a signal. matlab code

电磁场一维的fdtd，适用于初学者参考，内为txt格式，直接复制粘贴到matlab即可。(Electromagnetic field one-dimensional fdtd)

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