soil-heavy-metal-pollution-

主程序arma2Ddemo是对模拟图像的2DAR和ARMA参数估计。(arma2Ddemo: See and run the demo arma2Ddemo for an example of 2D AR and ARMA parameters estimation from simulated images. - sim_ar2d: generation of simulated 2D AR process. - sim_arma2d: generation of simulated 2D ARMA process. - ar2d: solves 2D yule walker to estimate AR parameters - arma2d: estimation of 2D ARMA parameters. First step: estimation of the gaussian input by inv_ar2d, Second step: linear system solution to estimates simultaneously AR and MA parameters, as explained in [1]. - inv_ar2d: first step in arma2d. Filters through inverse filter 1/AR an AR process, to generate its innovation Gaussian signal. It is used here to estimate the Gaussian noise input to the ARMA 2D process, approximating the ARMA model to a high order AR model. - poles2coeff: converts poles chosen by user to AR or MA coefficients (support function) )

Dq frame pwm rectifier which work in open loop for traction systems.matlab simulink modal is aasigned with it.

说明：  对人脸图像库的训练素材进行主成分分析，从而识别人脸图像。较详细说明见程序内部。(Face image database on the training material for the principal component analysis to identify the face image. See more details within the program.)

巴特沃斯滤波器MATLAB仿真程序，分析，绘图，手动设置参数(MATLAB simulation program Butterworth filter, analysis, mapping, set the parameters manually)

说明：  一个OFDM信号产生以及解调程序，用matlab编写(OFDMmatlab)

This simulation by MATLAB s simulink for boost converter circuit "HIGH STEP-UP CONVERTER"

这是一份比较完整的HHT资料，有源程序以及它在地震资料处理中的应用。对于新手来说这是一个很好的学习材料。(This is a relatively complete material on HHT including the source and its applications in seismic data processing. For a learner,it is a good learning materials.)

solving poison equation by matlab

This code is about shot in seismic field.

利用matlab源程序编写了可以绘制不同曲线的各种界面！(Prepared using matlab source code can draw a variety of different curves of the interface!)