ch_model_awgn

本程序是雷达SAR图像算法的经典程序集合，包含波数域算法，RD算法和CS算法，对于学习SAR成像非常有帮助(This procedure is a SAR radar image of the classic algorithm collection procedures, including the wave number domain algorithm, RD algorithm and CS algorithm for SAR imaging study very helpful)

i like electronic, i share this file to anyone. i hope it help anyone to interface.

plant growth simulation algorithm to find minimum power loss values

给出卫星适当的初始位置和速度，利用其运动微分方程，求卫星运行的轨道（航天航空）( Appropriate given the initial satellite position and velocity, using the equations of motion, find the satellite orbit)

方程求根的源代码，matlab编写的，值得收藏，欢迎大家踊跃下载，为中国的科研事业做贡献(Equation Root of the source code, matlab prepared and worthy of collection, enthusiastically welcomed the U.S. download, in order to make China' s contribution to the cause of scientific research)

全国大学生建模竞赛必备Matlab源码，包含多种数学处理函数。(The National Undergraduate Modeling Contest essential Matlab source code, contains a variety of mathematical processing function.)

利用matlab来实现多项式的运算，及其各种符号的使用。例如求极限，数值积分，函数的求导等(Using matlab to achieve polynomial operations, and its various symbols are used. Such as finding the limit, numerical integration, function derivation, etc.)

主成分分析，用于海洋、气象，将多个变量通过线性变换以选出较少个数重要变量的一种多元统计分析方法。(Principal component analysis for the ocean, weather, several variables by linear transformation to elect a number of multivariate statistical analysis less important variables.)

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.

数字滤波器设计程序，对各种滤波器设计，参数，原理进行了纤细说明(Digital filter design program, a variety of filter design parameters were slim that the principle)