kalman

1.本程序是自己刚刚接触SAR时编写的时域星载SAR点目标回波仿真，包含了卫星轨道模型、计算星目斜距时用到的各种坐标系转换、SAR回波计算模型以及简单的SAR成像模型，希望对初学者有所帮助。 2.相应的参考资料可查找《卫星轨道姿态动力学与控制》及《魏钟铨_合成孔径雷达卫星》；(1. This program is just contact with their own prepared when the time domain SAR spaceborne SAR point target echo simulation, contains the satellite orbit model, the satellite project when the use of a variety of slant range coordinate system conversion, SAR echo calculation model and SAR imaging model simple, want to help beginners. 2. The corresponding reference can be to find " satellite attitude and orbit dynamics and control" and " Wei Zhong Quan _ synthetic aperture radar satellites" )

本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力(failed to translate)

改程序全套是用于大型高耸结构风洞测压试验前、后处理，含义明确，计算快速，已用于多个国内重要工程的风洞试验。(Reform program is used for large-scale high-rise structure, a full set of wind tunnel tests manometry before and after the treatment, unequivocal, computing fast, has been used in many domestic key projects of the wind tunnel tests.)

Rake reception using matlab

Blocking an image based on the specified window size.

基于Z-N的PID参数整定，代码简单实用，适合初学者使用(ZN-based PID parameter tuning, the code is simple and practical, suitable for beginners)

RS码的matlabb仿真非常有帮助的东西，完整源代码。 (RS code matlabb simulation is very helpful things, complete source code.)

数值计算中平方根算法的源程序，采用matlab写的，对数值计算有很大的帮助作用。(Square root algorithm for the numerical calculation of the source, using matlab to write on the numerical calculation of great help.)

说明：  bp神经网络的模型训练与测试，并判断模型的可靠性。(Bp neural network model training and testing, and judge the reliability of the model.)

LDPC implemented in MATLAB, BPSK performance using LDPC checked