声波中计算入射波、反射波系数scatter_zy

zernike矩算法，matlab语言开发，可用于图像匹配等(zernike moments algorithm, Matlab language can be used for image matching, etc.)

说明：  用粒子群算法去优化一个给定的函数，使其找到最小值或最大值(Using particle swarm algorithm to optimize a given function, to find the minimum or maximum value)

可以对信号进行三点五次滤波，减少外在环境对数据造成的干扰(Three points five times the signal can be filtered to reduce the interference caused by the external environment on the data)

addition of white gaussian noise

用matlab实现自动多阈值分割，有需要的可以看看(Matlab multi-use automatic threshold segmentation, we need to look at)

产生一个中频正交的信号，叠加有载频信号，能提出载频并对其解调(Generate an IF quadrature signal, the carrier frequency signal is superimposed, can raise the carrier frequency and demodulating)

本程序介绍了相关算法在干涉仪侧向上的应用，具有很好的实时性。(This procedure describes the lateral correlation algorithm in the application of interferometer has good real-time.)

全面分析机械类个企业的经济效益，以一家公司的盈利额为研究对象，选择了8个不同的利润指标，14企业关于这8个指标的统计数据如下表所示，试进行主成分分析。(Comprehensive analysis of the economic efficiency of enterprises machinery months to a company' s earnings amounted research object, select 8 different profit targets, 14 companies on these eight indicators of statistical data in the following table and try to principal component analysis.)

局部均值分解(Local Mean Decomposition)，处理非线性非平稳信号的一个方法，LMD是依据信号本身的信息进行自适应分解(Local Mean Decomposition, a method for processing nonlinear non-stationary signals, LMD is adaptive decomposition based on the information of the signal itself.)

此程序用来求解水膜蒸发过程温度分布，蒸发率等参数。(This program is used for numerically calculating the temperature distribution and evaporation rate during the evaporation of a water film.)