code

介绍Auto focus的文章，主要介绍了对焦技术，探测技术；包括频域分析、目标函数、目标函数效能验证、影像评估效能之因素、高斯低通滤波器参数的选取、自动对焦技术；以及相关实验结果与分析。(Introduction Auto focus of the article introduces the focus technology, detection technology including frequency domain analysis, the objective function, the objective function performance verification, image assessment of the effectiveness of the factors, Gaussian low-pass filter parameter selection, auto-focus technology and related experimental results and analysis.)

signal processing,signal processing

说明：  自己写的isodata和C均值matlab程序，文件带注释，简单易懂(Wrote it myself isodata and C mean matlab programs, files with comments, easy to understand)

分享我在中国期刊网下载的神经网络论文.分享我在中国期刊网下载的神经网络论文(share in the Chinese Journal Net download neural network papers. I share in the Chinese Journal Net download neural network papers)

I have thoroughly study the basic of image compression techniques. From that I have selected SPIHT algorithm for my research work. I have implemented on image compression for gray images using SPIHT algorithm. Image compression is implemented using this algorithm has better result over the previous result on gray images and also improved PSNR value high but on other side low result on compression ratio.

不可分辨多目标对单脉冲雷达的影响，当有多个目标落在雷达的波束内无法辨别时的雷达输出(when unresolved targets exist in one beam of monopulse radar，the received signal of radar will be different)

关于计算机模拟的matlab实验(Matlab on the computer simulation experiment)

用matlab编程，采用512个频率点绘制各种窗函数的幅频特性。 (Using matlab programming, 512 frequency points using a variety of window functions mapping amplitude-frequency characteristics.)

frequency hop spread spectrum technology for secure data tranfer

聚类算法k-medoids 该代码针对的是图像处理 该算法采用局部航迹与系统航迹进行关联的策略(K-medoids clustering algorithm is the code for the image processing algorithm strategy using a local track trajectories associated with the system)