2011-11-29_07_54_16_Antenna

快速傅里叶变换， 频谱的泄露，混叠误差实例的matla程序。(Fast Fourier Transform: In order to reduce the number of DFT calculations of a fast algorithm.)

用matlab编写的人脸检测的算法，包含图片库，可以直接运行，检测出人脸在图片中的位置。(Matlab prepared with face detection algorithms, including image libraries, can be run to detect the face position in the picture.)

％电影动画： ％1.首先调用moviein函数对内存初始化.创建一个足够大的矩阵来容纳一系列指定的图形（帧） ％2.调用getframe函数生成每一帧.该函数返回一个矢量，利用这个矢量创建一个电影动画矩阵 ％3.调用movie函数按照指定速度进行指定次数的播放 ％例子2：演示如何实现快速傅立叶变换（exp(j*2*pi/n)）的可视化过程( Movie animation: 1. First transfers the moviein function to the memory initialization Founds graph which an enough big matrix holds a series of assigns (frame) % 2. Transfers the getframe function to produce each This function returns to a vector, uses this vector to found a movie animation matrix % 3. Transfers the movie function according to assign the speed to carry on assigns the number of times the broadcast Example 2: How demonstrates realizes fast Fourier transforms (exp (j*2*pi/n)) the visible process )

matlab跟电子信息的深切联系，在电子信息的应用。(matlab deep contact with the electronic information in the application of electronic information.)

MAP algorithm for decoding

滚动轴承故障诊断是机械故障检测中一个重要方面。使用小波包分析和包络分析相结合的方法提取轴承微弱振动信号, 克服了传统包络分析方法易丢失信号有效成分的缺点。包络信号的细化谱较好体现了轴承故障信息。(Bearing Fault Diagnosis of mechanical fault detection in an important aspect. The use of wavelet packet analysis and envelope analysis method of combining extracts bearing vibration signal weak to overcome the traditional envelope analysis method easy to lose the signal disadvantage of the active ingredient. Refinement of the envelope signal spectrum better reflects the bearing fault information.)

雷达课程作业，阵列天线波束形成，脉冲压缩， MTI 滤波器设计，3变T 六脉冲对消 MTI， 非相干积累 恒虚警处理， 和差波束分析。(Radar course work, the array antenna beam forming, pulse compression the MTI filter design, 3 variant T six-pulse MTI cancellation, non-coherent accumulation CFAR and difference beam analysis.)

本文论述并设计实现了一个脱机自由手写体数字识别系统。文中首先对待识别数字的预处理进行了介绍，包括二值化、平滑滤波、规范化、细化等图像处理方法；其次，探讨了如何提取数字字符的结构特征和笔划特征，并详细地描述了知识库的构造方法；最后采用了以知识库为基础的模板匹配识别方法,并以MATLAB作为编程工具实现了具有友好的图形用户界面的自由手写体数字识别系统。实验结果表明，本方法具有较高的识别率，并具有较好的抗噪性能。(In this paper, and design implementation of a freely Offline handwritten numeral recognition system. First, identify the figure of the pre-processing treatment were introduced, including binarization, smoothing filtering, standardization, refinement, such as image processing method Secondly, to explore how to extract the structural features of characters and stroke characteristics, and described in detail Knowledge of the construction method Finally the use of a Knowledge-based template matching to identify methods and MATLAB as a programming tool to achieve with a friendly graphical user interface of freely handwritten numeral recognition system. The experimental results show that this method has higher recognition rate, and has better anti-noise performance.)

这里给出几幅多聚焦图像，为大家做图像融合处理，一共两组图像(Here are the pieces of multi-focus image, for everyone to do image fusion, a total of two sets of images)

说明：  均匀线阵常规波束形成仿真 假设条件 窄带(单频)； 远场平面波(目标距离远大于阵长)； 无多途干扰； 信号无多普勒，无畸变。(Simulation of conventional beamforming of uniform linear array)