hilbert

二维光子晶体禁带的MATLAB源码,光子晶体中因周期性结构而存在的频率禁带称为光子禁带，光子禁带的存在是光子晶体具有广泛应用前景的重要原因。 禁带越大，可控光的频带也越宽(Two-dimensional photonic crystal band gap of MATLAB source, photonic crystal structure exists because of the cyclical frequency band known as photonic band gap, photonic band gap is the existence of photonic crystal has a broad application prospects of the important reasons. The greater the band gap, controllable light the more wide-band)

2004China Undergraduate Mathematical Contest in Modeling (CUMCM)是2004年全国数学建模大赛的题目（B题）。现将题目，建模过程及利用“多元线性回归和人工神经网络”解题的源代码上传给大家一起分享。(2004China Undergraduate Mathematical Contest in Modeling (CUMCM) 2004 National Mathematical Modeling Contest of Title (B items). The topic, modeling process and the use of )

提出了一种求解电磁场有限元 边界元混合法所生成的线性方程组的有效方法 ———内观 法结合多波前法.由于该线性方程组的系数是一个部分稀疏部分满填充的矩阵,为了加速求解,应用内观法将系数矩阵分为 2块,一块是有限元法形成的稀疏矩阵,另一块是边界元法生成的满阵,然后用多波前法求解稀疏矩阵方程,用高斯 约当消去法解满阵方程. 采用该方法,计算了二维多层介质柱体的雷达散射截面.计算结果表明,该方法的计算效率远远高于传统的高斯法.(Proposed for solving mixed finite element boundary element linear equations generated by an effective method of Vipassana--- a combination of multi wave front method. Since the coefficients of linear equations is a part of the sparsely populated part of the full matrix, in order to speed up the solution, application of Vipassana coefficient matrix is ​ ​ divided into two, one is the finite element method for the formation of the sparse matrix, the other is the boundary element method generates the full array, and then use the multifrontal method for solving sparse matrix equation Gauss Jordan elimination method with full matrix equation solution. use this method to calculate the two-dimensional multi-layer dielectric cylinder of the radar cross section. The results show the computational efficiency of this method is much higher than the traditional Gaussian law.)

单自由度振动系统－－基于MATLAB建模仿真。根据单自由度振动系统数学模型,设计了单自由度振动系统的数学仿真实验,实验结果给出了振动方程的数值解,并用几何方式定量描述了振动过程和频幅特性.(single-freedom vibration systems-- based on MATLAB simulation modeling. Under the single-freedom vibration systems mathematical model, the design of single-freedom vibration systems of mathematical simulation, The experimental results are given vibration Numerical Solution of equation, and using quantitative description of the geometric means of vibration and frequency properties.)

用短时平均能量值对干净的语音信号进行检测，可以区分语音和非语音部分(With short time average energy value to test the clean speech signal, can distinguish between voice and non-voice part )

基于QUARC系统，对轮式机器人QBot2进行轨迹跟踪控制(Trajectory tracking control of wheeled robot QBot2 based on QUARC system)

本文针对运动目标的检测和跟踪这一研究课题，深入研究了两种非常重要的检测和跟踪技术-光流技术和帧差法的检测技术，在运动目标检测和跟踪中的应用中，对光流法和帧差法的优缺点进行了实验分析，文中所描述的这两种检测和跟踪技术和方法都通过仿真实验进行了验证。(Detection and tracking of moving targets, the author of this paper the research topic, further study of the two very important detection and tracking technology of frame differential method - optical flow technology and testing technology, application in moving target detection and tracking of optical flow method and the advantages and disadvantages of frame differential method has carried on the experimental analysis, this paper describes these two kinds of detection and tracking technology and method is verified by simulation experiments.)

单频率成分的离散频谱校正源程序（比值校正法）。针对单一频率谐波信号的离散频谱校正，可选择加矩形窗和汉宁窗。已调试通过。(Matlab Codes for Ratio correction based on different window.Rectangle and Hanning Window can be choose to act.)

说明：  自编函数实现AR模型的最小二乘估计（AR阶数=4）(AR model of self-function of least squares estimation (AR order = 4))

This Project is basic explanation about BPSK Design in Simulink, How the constellation diagram has been obtained from the basic design.