信噪比和均方

image enhancement in matlab!

杨氏双缝干涉 两相干光源到接收屏上P点距离r1=(D2+(y-a/2)2)1/2, r2=(D2+(y+a/2)2)1/2, 满足相干条件的光波叠加后，对于观察屏上某一确定点，即r1、r2确定后，叠加后的光强为 式中λ为光波的波长， 、 ，令相位差φ=2π（r2-r1）/λ, 最后可得公式如下： ， 最后光强I=4I0cos2（Φ/2）。 观察相干光叠加后光强的分布. (Young' s double slit interference two coherent light source to the point P on the receiving screen distance r1 = (D2+ (YA/2) 2) 1/2, r2 = (D2+ (y+a/2) 2) 1/2, meet coherent conditions lightwave after superposition, for a determined point on the viewing screen, i.e. R1, R2 is determined, the superimposed light intensity where λ is the wavelength of light, make the phase difference φ = 2π (R2-R1)/λ, final can be obtained using the following formula: Finally, the light intensity I = 4I0cos2 (φ/2). Observed coherent superposition of light intensity distribution.)

用最大最小距离实现聚类的matlab函数(With maximum and minimum distance to achieve clustering matlab function)

通过编程，利用变步长的求积公式求解积分，具有较高的精确度(By programming, the integral can be solved by the quadrature formula with variable step size, which has high accuracy.)

sine pwm modulation for capacitor clamped two level VSI

新型的蝙蝠算法程序代码，可用于各种工程优化，生产调度，组合函数优化等复杂问题。具有高效的搜索效率。(The new bat algorithm code, can be used for a variety of engineering optimization, production scheduling, and other complex combination of function optimization problems. A highly efficient search efficiency.)

本文描述了最优化问题的基本概念、分类和通常的求解方法，全局最优化在特定领域里德最近发展，同时简单介绍了几个优化软件(This paper describes the basic concepts of optimization problems, classification and the usual method for solving global optimization of recent developments in specific areas Reid also introduced a few simple optimization software)

地球物理大地电磁测深一维正演，是求解析解(magnetotelluric 1D forward)

一本外文将流体力学的书记，可以提供编写程序的思想(A foreign secretary of the fluid dynamics can provide programming ideas)

关于OFDM信道估计算法的仿真，比较详细(Simulation of channel estimation on OFDM)