box_frac_dem

direct sequence spread spectrum

基于RSSI测距的无线传感器网络改进质心定位算法(RSSI-based ranging centroid location algorithm for WSN)

数字通信第四版答案。 对学习数字通信的同学比较有用。(the answer of digital signal communication)

很好的粒子图像测速（PIV）Matlab源代码，本人在Matlab 2010下测试通过。(Particle image velocimetry (PIV) Matlab source code, I tested it using the Matlab 2010.)

Matlab interface for the image segmentation algorithm of Efficient Graph-Based Image Segmentation Pedro F. Felzenszwalb and Daniel P. Huttenlocher International Journal of Computer Vision, 59(2) September 2004.

滤波器的设计和实现，可以观察程序的结果，来看滤波效果，很好的学习资料(design filter)

unit root test!!!!!!!!!!!!!!!!!!!!!包括各种计量经济学代码(unit root test!!!!!!!!!!!!!!!!!!!!!including kinds of toolbox)

用matlab中simulink工具箱搭建的具有延迟特性的模型(Using matlab in simulink toolbox to build a model with delay characteristics)

说明：  品质因子(衰减的倒数)的计算程序，有井曲线作为输入可计算其地震波的衰减。(Quality factor (inverse of attenuation) of the computer program, a well calculated curve as the input attenuation of seismic waves.)

利用matlab实现下面的问题：其中u(k)和z(k)分别为模型的输入和输出变量；v(k)为零均值、方差为1、服从正态分布的白噪声；为噪声的标准差；利用得到的u(k)和z(k)来辨识模型的阶次和参数。　　(Using matlab to achieve the following questions: where u (k) and z (k) respectively, the input and output variables of the model v (k) with zero mean and variance 1, follow a normal white noise noise standards Poor utilization u (k) and z (k) to identify the order and parameters of the model.)