r_qpsk

描述了利用矩阵方式产生单极性归零码的过程，并给出单极性归零码的码型和功率谱。(Matrix describes the way the use of unipolar NRZ process, and gives the code NRZ unipolar and power spectrum.)

关于符号计算部分，适合MATLAB的初学者使用，这是第二部分，和第一部分相衔接(About symbolic computation section, suitable for beginners to use MATLAB, which is the second part, and the first part of the convergence)

用于实现灰度图像阈值分割的二维最大熵方法，很好用，希望对大家有帮助。(Used to achieve gray image threshold segmentation of the two-dimensional maximum entropy method, matlab source.)

用matlab编制卫星运动的动画程序，非常有趣！(A cartoon programme of star moving using matlab code)

说明：  1.被动悬挂设计simulink模型 2.对于任意一段路面谱，求出其功率谱密度与频率的分布关系，在标准路面图中画出曲线验证路面 3.积分白噪声法路面构造simulink模型 4.整车平顺性分析simulink模型 5.实际路谱案例，c级路面 6.悬架动载荷功率谱密度图像画图matlab编程(1. Simulink model for passive suspension design 2. For any section of road spectrum, the distribution relationship between power spectral density and frequency is obtained, and the curve is drawn in the standard road map to verify the road surface 3. The Simulink model of pavement construction based on the integral white noise method 4. Vehicle ride comfort analysis Simulink model 5. Actual road spectrum case, class C pavement 6. Matlab programming of suspension dynamic load power spectral density image drawing)

本程序由经典９９行拓扑优化程序改编，可以反向进行反向夹持器的拓扑优化( A 105 LINE TOPOLOGY OPTIMIZATION CODE BY OLE SIGMUND, JANUARY 2002 This example is selected from the document of "on the design of compliant mecanisms using topology optimization" Note the input displacement is specified as 5e-3mm here )

循环结构程序设计的计算实例和M函数文件的计算实例(Loop structure calculation program design examples and examples of calculation of M function file)

说明：  上采样和下采样的matlab程序，以函数形式给出，有三种模式。(upsampling,downsampling,matlab,three mode)

说明：  这是2自由度并联机构的位置反解和一阶影响系数求输入速度的代码(This is a 2-DOF parallel mechanism of the inverse position and the first coefficient of seeking input speed of the code)

一种正则化正交匹配追踪ROMP算法的matlab源程序，一个函数，方便使用(A New Regularized Orthogonal Matching Pursuit ROMP algorithm matlab source, a function, easy to use)