exercise3

自己收集的matlab遗传算法的资料，耐心看完会有收获(Own collection of matlab genetic algorithm data, there will be harvesting the patience to read )

Surfmatch is a method to post publicity without taking account of the usual methods like that to show postings near the search engines or to record publicity on advertizing sites. Here is the word locates: behavioral targeting

简单的回声隐藏算法，应用于音频的通用隐藏以及通用隐藏算法分析领域(Simple echo hiding algorithm used in 他the field of audio hidden and the field of general purpose hidden algorithm analysis)

低频信号先进行放大，再调制解调，设计发射(Low-frequency signal is first amplified, and then modulation and demodulation, the transmitter )

Matlab book is meant for technical engineers for writing their source codes and analysing it.

入侵式杂草优化算法是一种模拟自然界中杂草繁殖进化过程的随机搜索的优化算法，将待求解的问题转化为目标函数优化问题。(Invasive weed optimization algorithm is a simulation of natural reproduction in the evolutionary process of weed random search optimization algorithm, to solve the problem will be converted to the target function optimization problems.)

用二维小波包分解得到水平垂直细节系数，据此组合合成图像的边缘，并与传统算子方法对比(Two-dimensional wavelet packet decomposition has been the level of vertical detail coefficient, which images the edge of combinatorial chemistry and operator with the traditional methods)

说明：  说明了遗传算法的原理和优越性，通过程序讲解了遗传算法的实际运用。(Describes the principles and advantages of the genetic algorithm, through the program to explain the practical application of genetic algorithms.)

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)

在无线通信体系中,由于开放的通信信道条件,卫星通信系统中通信链路容易受到平均大气条件的影响,尤其是采用Ka波段的高频信号的系统,容易受到降雨造成的雨衰影响,严重影响了系统的有效性和可靠性。(In a wireless communication system, the communication channel open, average atmospheric conditions vulnerable to the communication link in satellite communication system, especially the system of high frequency signal using Ka band, vulnerable to the influence of rain attenuation caused by rainfall, seriously affect the validity and reliability of the system. In digital systems, channel coding is often used to improve reliability, while modulation is used to ensure effectiveness. Low order modulation and large redundancy coding are adopted to improve the reliability.)