3D-FDTD

4 16 64 QAM plots for simulated and theoretical results for OFDM system under a standard Rayleigh channel

利用Matlab提取图片中的数据 从事科研或者工程的人员在文档撰写过程中，常需要将文献中的曲线与自己的结果对比，为获取原始数据，一种常用的办法是手动描点，即将原始曲线放大然后打印出来，选取一定数量的点，读出其横纵坐标，然后重绘。对于较为平坦的曲线，这种方法当然可行，但当曲线数量增加，曲线变化复杂，这种方法工作量可想而知。前段时间由于原始数据丢失，仅剩几十幅图片，本人尝试过手动描点，经历几个小时奋战，实在无法继续，索性转向matlab，借助其强大的数据处理能力，编写了两个GUI的小软件image2data、data_poly提取数据，如今大功告成，遂于大家分享。(Using Matlab to extract picture data in scientific research or engineering personnel in the process of writing documentation, often need to curve in the literature comparing the results to obtain the original data, a common approach is described in the manual, is about the original amplification curve and then print it out, select a certain number of points, read out its horizontal and vertical coordinates, and then redraw. For a flatter curve, this approach is of course possible, but when the increase in the number of curves, the complexity of the curve, this method can imagine the workload. Some time ago due to the loss of original data, except for the dozens of pictures, I tried manually tracing point, after several hours of fighting, I can not continue to simply turn to Matlab, with its powerful data processing capabilities, the preparation of two GUI software image2data, data_poly extract data, and now you' re done, then share with you.)

matlab变成实现prony算法，自动提取符合信号中分量的频率、幅值、相位、衰减系数等参数，可以实现数据拟合(matlab become realized prony algorithms automatically extract the parameters frequency, amplitude, phase, in line with the signal attenuation coefficient component, you can achieve data fitting)

现今阵列应用中，宽带信号的处理越来越多。由同心圆阵组成的多圈圆形阵列在宽带信号处理上有更强的优势。和单圈均匀圆阵相比，同心多圈圆阵的嵌套设计阵列工作频率范围更宽，同时，灵活性增强。 (Nowadays array applications, the broadband signals in many more and more treatment. By the array composed of many concentric circular ring array of broadband signal processing at up there is more advantage. And single-lap compared to uniform circular array, circular array concentric circle many nested design frequency range of a broader array of work at the same time, enhance flexibility.)

芯片一旦进入摄像头视场,则能被系统感知,系统会开始对该芯片进行自动跟踪,确保ROI区域始终包含芯片,从而缩小了待...系统使用图4所示的方法提取特征量。其中有图像平面上纵、横、斜交叉的20条直线,这20条直线分别标记上1～20的序号... (chip camera field of view, the system will be perceived. the system started automatically tracking chips to ensure that the ROI region always contain chips narrowing the question ... system, as shown in Figure 4 methods of extraction volume. These images plane vertical and horizontal, oblique cross the 20 straight, This 20 straight were labeled on a number of ~ 20 ...)

edge detection for plate recognition

数字图象处理程序，有原图，可以直接运行，方便初学者对数字图像处理的入门练习(Digital image processing procedures, artwork can be run directly to facilitate beginners to practice the entry of digital image processing)

一种上行小区间干扰协调的方法.pdf (An uplink inter-cell interference coordination method .pdf)

利用传输矩阵方法，对均匀光栅的反射谱模拟(Uniform grating reflection spectrum simulated using the transfer matrix method)

可以根据图中点的位置判断连接关系，然后搜寻图中的MDS（最小支配集合）(You can determine the connection between the position according to FIG midpoint, then search graph MDS (Minimum Dominating Set))