pegasis

说明：  this code is usable for embed watermark into image

We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.

Chaos synchronization in coupled lasers This is run with Simulink

说明：  卡尔曼滤波的一个典型实例是从一组有限的，对物体位置的，包含噪声的观察序列预测出物体的坐标位置及速度. 在很多工程应用(雷达, 计算机视觉)中都可以找到它的身影. 同时，卡尔曼滤波也是控制理论以及控制系统工程中的一个重要话题. 　　比如,在雷达中,人们感兴趣的是跟踪目标,但目标的位置,速度,加速度的测量值往往在任何时候都有噪声.卡尔曼滤波利用目标的动态信息,设法去掉噪声的影响,得到一个关于目标位置的好的估计。这个估计可以是对当前目标位置的估计(滤波),也可以是对于将来位置的估计(预测)，也可以是对过去位置的估计(插值或平滑). (kalman filter in matlab)

这个是关于小波变换，对图像增强介绍的文章，共大家参考研究、使用。(This is the wavelet transform, image enhancement described in the article on the total of your reference and use.)

Distribution System Reconfiguration

说明：  均值平移跟踪算法中核函数窗宽的自动选取代码，根据目标大小变化核窗宽，使得当目标出现大小变化时准确跟踪到目标中心(The automatic selection code of kernel function window width in mean-shift tracking algorithm changes the kernel window width according to the size of the target, so that the target can be accurately tracked to the target center when the size of the target changes)

正切函数法改进粒子群优化算法，惯性因子是正切函数(Tangent function improved particle swarm optimization algorithm, the inertia factor is tangent)

消失矩作用的程序，它是用一维信号来进行编程 (vanishing moments of procedures, it is a signal to carry out peacekeeping Programming)

book for matlab for beginners