C4_5

Digital modulation techniques

介绍了matlab中常用的优化函数并给出了算例(Describes the commonly used optimization function matlab)

实现信号的SVD 分解,对信号中的奇异性进行监测，对突变信号点也可以很好监测(to complete the SVD for signals，Singularity of signal monitoring, signal monitoring point can be very good for mutations)

有限元法分析电磁场二维问题,中间是1V，外面是0V(Finite Element Analysis of Electromagnetic two-dimensional problem, the middle is 1V, the outside is 0V)

该代码利用matlab，根据各类边界条件的设定，实现了FDTD的算法。( This MATLAB M-file implements the finite-difference time-domain solution of Maxwell s curl equations over a three-dimensional Cartesian space lattice comprised of uniform cubic grid cells.)

matlab算法——计算三维散乱点云的曲率，包括主曲率，高斯曲率和平均曲率(matlab algorithms- calculate the three-dimensional curvature of scattered point cloud, including the main curvature, Gaussian curvature and the mean curvature)

L4_1.m: SVD轉換(程式) L4_2.m: 影像轉換的能量集中能力(程式) L4_3a.m: 小波轉換之多重解析架構(程式) L4_3b.m: 小波轉換係數與影像的方向性(程式) energy.m: 能量集中(函式) L4_1.bmp: 影像檔 L4_2.bmp: 影像檔 L4_3b.bmp: 影像檔 woman.mat: Matlab的矩陣變數檔 (L4_1.m: SVD conversion (program) L4_2.m: image conversion of energy to focus capacity (program) L4_3a.m: the multi-resolution wavelet transform architecture (program) L4_3b.m: wavelet transform coefficient and the direction of the image (the program) energy.m: energy concentration (function) L4_1.bmp: image file L4_2.bmp: image file L4_3b.bmp: image file woman.mat: Matlab matrix variable file)

用来在飞机模型设计中全机总体参数计算程序，其中包含。进行多次反复迭代运算(model airplanes used in all design parameters for the overall program, which contains. Several iterations Operational)

说明：  清华大学信号处理原理课程实验，内容是各种卷积计算方法性能的比较(Tsinghua signal processing theory course experiment, the content is the convolution calculation methods compare the performance of)

大地电磁二维正演程序是电磁法的基础编程，首先设置地电断面然后通过正演模拟电磁场在大地中的传播形式来得到地下地质体的电阻率情况，从而得到地下地质体情况(Two-dimensional magnetotelluric forward modeling procedure is based programming electromagnetic method, first set the geoelectric section and then through the forward modeling electromagnetic propagation in the earth in the form to get the subsurface resistivity body condition, resulting in underground geological conditions)