jeiqan

现代通信系统——使用matlab 源程序(Modern communications systems- the use of matlab source)

很好的matlab程序，大家可以关注一下，主要是做图像的检测的。。。。(Good matlab program, we can look at the main image detection. . . .)

HADI SAADAT NUMERICALS

高效线性整数规划求解matlab源程序，详细注释，完善测试(linear integer programming matlab source codes with detailed remarks and tests，)

此为事件触发型WSN（无线传感器网络）的密钥分发程序。 分为主程序KEYHANDOUT 5个可供加载到实际网络中的5个子程序PART1-5 还有一个初期密钥的建立KEYSOURCE函数。 调用时 1：先运行KEYSOURCE函数初始化环境。 2：在直接运行主函数KEYHANDOUT函数即可。 (Dies ist eine ereignisgesteuerte WSN (Wireless Sensor Networks) Schlüsselverteilungsprozess. Das Hauptprogramm ist in KEYHANDOUT geteilt 5 zum Laden in das eigentliche Netzwerk von fünf Unterprogramme zur Verfügung PART1-5 Es gibt auch eine Funktion der erste Schlüsselerstellung Hauptquellgruppen. Wenn Sie anrufen ein: zum ersten Mal ausgeführt Hauptquellgruppen Funktion initialisiert die Umwelt. 2: direkt ausführen, um die Hauptfunktion KEYHANDOUT Funktion.)

说明：  主要是介绍卡尔曼滤波器的原理，并形象地说明了实现过程，最后用matlab实现了这一原理。(Mainly to introduce the principle of Kalman filter, and vividly illustrates the realization of the process, and finally use matlab to achieve this principle.)

WSN 质心定位算法 Centorid Algorithm 加经典参考文献 A: 如果接受节点接收到的包数目与发送节点发送的包数目的比值大于CM_threshold,则这两个节点视为邻居节点 未知节点利用邻居锚节点进行定位，没有邻居锚节点的未知节点无法定位。 B: 如果接受节点接收到的包数目与发送节点发送的包数目的比值大于CM_threshold,则这两个节点视为邻居节点 未知节点一旦被定位就充当起锚节点的功能，向周围邻居发送自己的估计坐标信息 未知节点把已经定位的未知节点与锚节点同等对待 C: 如果接受节点接收到的包数目与发送节点发送的包数目的比值大于CM_threshold,则这两个节点视为邻居节点 有邻居锚节点的未知节点只利用邻居锚节点进行定位，没有邻居锚节点的未知节点才利用已经定位了的邻居未知节点进行定位。(WSN centroid localization algorithm Centorid Algorithm A: If you accept the received packet node number and the number of packets sent by the sending node ratio greater than CM_threshold, then these two nodes as neighbors Unknown node using the neighbor anchor nodes to locate, no neighbors anchor nodes and unknown nodes can not be located. B:   If you accept the received packet node number and the number of packets sent by the sending node ratio greater than CM_threshold, then these two nodes as neighbors Unknown nodes are positioned on as soon as the function of anchor nodes to send their neighbors estimated coordinate information Unknown unknown node to node already positioned anchor nodes treated equally C: If you accept the received packet node number and the number of packets sent by the sending node ratio greater than CM_threshold, then these two nodes as neighbors Of the unknown neighbor anchor node the neighbor nodes are only positioned anchor nodes, )

Demo macro to extract frames and get frame means from an avi movie and save individual frames to separate image files. Also computes the mean gray value of the color channels.

快速傅里叶变换，很实用的！！希望能帮助你(Fast Fourier transform, it is useful! ! Hope you can help)

利用三电平中心削波自相关法实现清、浊音判定，并提取一段话音的基频参数，绘制基频曲线，并将该参数曲线合并到前面提取的短时过零率和短时能量参数曲线图中(Using a three-level center clipping from the relevant law to achieve clear, voiced determination, and extract some of the fundamental parameters of the voice, drawing the fundamental frequency curve and merge the parametric curve to the front of the extraction rate and the short-term zero short-term energy parameters graph)