SIM

Cert Path Validator Test for Andriod.

信道编码技术在数字通信系统中的应用研究,主要针对卷积码进行了仿真。(Application of channel coding technology in digital communication systems, mainly for convolution codes simulated.)

第一步是计算输人信号单边功率谱密度（ESD）。使用快 ％速傅里叶（FFr）算法将信号从时域转换到频域。因为FFr算法的输出是离散谱，而这 ％里我们需要的是连续谱，因此需要引人不同的比例因子来实现从离散谱到连续谱的转换。 ％在第二步中，我们利用迭代算法计算出相对于特定阂值的ESD的最高和最低频率，从而 ％估算出被检测信号所占用的带宽。这种算法同时适用于基带信号和已调制信号。最后， ％在第三步中，我们给出了输出图形的原代码。(The first step is calculating the input signal unilateral power spectral density (ESD). The use of fast Fourier speed (FFr) algorithm for the signal conversion from time domain to frequency domain. FFR algorithm because the output is a discrete spectrum, which we need is a continuous spectrum, so the need for food of different scale factor to achieve from the discrete spectrum to continuous spectrum conversion. In the second step, we use iterative algorithm to calculate a specific threshold in relation to the ESD of the highest and lowest frequency, thus estimated to be occupied by the signal detection bandwidth. This algorithm applies to both baseband signal and modulation signals. Finally, in the third step, we give the graphical output of the original code.)

对三维shepp-logan数据做三维扇形投影，并根据投影数据重建出shepp-logan图像。(Three-dimensional shepp-logan data do three-dimensional projection fan and shepp-logan reconstructed image from the projection data.)

边缘保护平滑算法（eps），可以读图像实现保边滤波。(Edge preserving smoothing algorithm (eps), can read the image edge filter to achieve protection)

K-L变换matlab代码,用于去相关性，图像预处理，主成份分析方法(K-L Transfer)

该程序可以通过求解指纹的点分布图和块分布图达到指纹识别的目的。(The program can be obtained by solving the point of the fingerprint maps and block maps to the purpose of fingerprint identification.)

在MATLAB实现的用C实现的KNN算法，输入训练数据文件，和test文件，进行预测分类，并且可以与真实情况比较测试预测正确百分比(Implemented in MATLAB KNN algorithm implemented in C, the input training data file, and test files, to predict the classification and testing with the real situation is more correct percentage of predicted)

以前编的PID程序，关于模糊PID控制方面的，有需要的可以学习下。(PID process previously compiled on fuzzy PID control, and there is a need to learn next.)

均匀线列阵波束形成，使用契比雪夫等旁瓣加权方式(chebshev different sidelobe)