bds

IIR和FIR滤波器的设计，用脉冲响应不变法和双线性变换法设计IIR滤波器，用窗函数法设计了FIR滤波器。(IIR and FIR filter design, with the impulse response method and the bilinear transform IIR filter design using window function design of the FIR filter.)

qpsk调制 信道仿真 采用蒙特卡洛 信号和噪声随机生成，莱斯信道(qpsk modulation and channel simulation using Monte Carlo signal and noise randomly generated, Rice channel)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

gray level slicing and gama correction

右边伸出的bar导航，IOS编程学习源码，很好的参考资料。(Bar navigation right out, learning IOS programming source code, a good reference.)

：VB与Matlab混合编程方法，通过建立VB与Matlab间的ActiveX连接，实现VB应用程序中调用Matlab， 建立与Matlab ActiveX服务器的连接。该方法通过利用ActiveX技术、应用DDE与Matlab通讯、使用MatrixVB、 生成执行文件、编译动态链接库等步骤实现(: VB and Matlab programming mix, VB and Matlab through the establishment of connection between the ActiveX, VB application, call the realization of Matlab, the establishment and Matlab ActiveX server. The method is through the use of ActiveX technologies, applications and Matlab DDE communication, the use of MatrixVB, generated executable file, compiled dynamic link libraries and other steps to achieve)

函数注册在Matlab和C++接口中起着重要的作用。在介绍函数注册作用的基础上，详细分析了函数注册的过程及应当注意的问题，并给出了一种实现函数注册的最简单的方法。用实例展示了函数注册的具体实现过程。 (registration function in Matlab and C interface plays an important role. In introducing the role of the registration function on the basis of a detailed analysis of the function of the registration process and should pay attention to the problem, and gives a registration function to achieve the most simple method. Examples demonstrate the function of the concrete realization of the registration process.)

this is digit recognition using som

LaTex,CTex文档编辑器，公式编辑代码，文档中附加漂亮的MATLAB代码，添加目录、附录、页码风格(LaTex, CTex document editor, equation editing code, documentation, add beautiful MATLAB code, add the directory, appendix, page style)

Kalman滤波 Made By Zhang HengFu X(k)=A*X(k-1)+B*U(k)+W(k)； Z(k)=H*X(k)+V(k)(Kalman Made By Zhang HengFu X(k)=A*X(k-1)+B*U(k)+W(k)； Z(k)=H*X(k)+V(k))