lv_86_in_3_hours_updated

this code is about ordfs and write whit matlab.

这里的k-means聚类，是事先给出原始数据所含的类数，然后将含有相似特征的数据聚为一个类中。(Where k-means clustering, is given in advance the number of classes contained in the original data, then the data contained similar characteristics grouped into a single class.)

噪声分贝仪器！主要是对城市马路边进行噪声监测！通过两级放大-检波-V/F转换到芯片通过公式处理-显示(Instrument noise decibels! Mainly on the city side of the road for noise monitoring! Amplified by two- Detector-V/F converter to the chip processing by the formula- Show)

matlab的滤镜 包含有2个文件 作业(matlab filter contains two file operations)

本文对于非线性非高斯问题，提出了一种改进扩展卡尔曼滤波（NIEKF）新方法。该方法将迭代滤波理论引入到扩展卡尔曼滤波器方法中，有效地重复利用新的测量信息，还利用Levenberg-Marquardt 方法调整预测协方差阵以保证算法具有全局收敛性。实验结果表明，所提方法具有更高的估计精度，是一种效率较高、性能较好的跟踪方法。(This non-Gaussian for nonlinear problems, an improved extended Kalman filter (NIEKF) the new method. The method of iterative filtering theory is introduced to the extended Kalman filter method, the effective measurement of repeated use of the new information, also using Levenberg-Marquardt method to adjust the covariance matrix of prediction algorithm to ensure global convergence. Experimental results show that the proposed method has higher estimation accuracy, is a high efficiency, good performance tracking methods.)

this document is related with physic method using matlab code

Matlab 时频分析技术及其应用Matlab 时频分析技术及其应用Matlab 时频分析技术及其应用(Matlab 时频分析技术及其应用)

简单程序，大家可以来参考参考，希望能有所帮助(Simple procedure, everyone can come to refer to the reference, hoping to be helpful)

code composer optimizer

说明：  使用波动方程有限差分模拟瑞雷波的传播，包括模拟和成像，可以更改检波器位置信息(surface wave modeling and display)