leach

这段代码主要是实现二阶高斯低通滤波器，本段代码全部用MATLAB语言实现的。(This code is to achieve second-order Gaussian low-pass filter, the above code to achieve the full use of the MATLAB language.)

THE FEATURE IS BILINEAR-INTERPOLATE THE SOUCE-IMAGE TO GET A DESTINATE-IMAGE

有信道编码，调制，信道估计等，包括最小二乘法、SVM、神经网络、1_k近邻法,通过matlab代码。( Channel coding, modulation, channel estimation, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, By matlab code.)

说明：  二维冲突概率算法，其实这个仿真是为了验证三维算法实现的基础，在二维的基础上再把二维扩展到三维。但也有不一样的地方(Two-dimensional conflict probability algorithm, in fact, this simulation is to verify the basis of three-dimensional algorithm, based on the two-dimensional two-dimensional and then extended to three-dimensional. But there are also not the same place)

audio watermark detection

本程序为粒子算法找最小值，很有启发意义，大家可以借鉴下(This program is to find the minimum particle algorithm, very instructive, we can learn from the next)

Estimating Attitude from Vector Observations Using a Genetic Algorithm-Embedded Quaternion Particle Filter 介绍了一种基于四元数粒子滤波的方法(Estimating Attitude from Vector Observations Using a Genetic Algorithm-Embedded Quaternion Particle Filter presents a quaternion-based particle filter method)

vigenere密码在起初的破译中是靠穷举法，找出与阅读习惯最适合的明文，但是也可以先缩小穷举范围，再查找(vigenere initial crack passwords by brute-force method is to identify the most suitable and clear reading habits, but can also be reduced exhaustive range, and then find)

包括随机梯度算法，相对梯度算法，DC-DC部分采用定功率单环控制，调试通过可以使用，快速扩展随机生成树算法，基于chebyshev的水声信号分析，IMC-PID是利用内模控制原理来对PID参数进行计算，有PMUSIC 校正前和校正后的比较。( Including stochastic gradient algorithm, the relative gradient algorithm, DC-DC power single-part set-loop control, Debugging can be used, Rapid expansion of random spanning tree algorithm, Based chebyshev underwater acoustic signal analysis, The IMC- PID is using the internal model control principle for PID parameters is calculated, A relatively before correction and after correction PMUSIC.)

偏最小二乘法-人工神经网络-支持向量机-极限学习机(This module contains PLS-ANN-SVM-ELM)