Chip_tool_Temperature

DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

说明：  bistativ simulation in synthetic aperature radar

交互式层次分析法源程序,输入判断矩阵即可进行可信度判断(Interactive hierarchy analysis method source code, enter the matrix can be credibility judgment)

(7,4)线性分组码matlab程序自己编的一个小程序 希望对大家有用((7,4) linear block code matlab program made themselves hope of a small program useful for all)

RBF径向基函数预测的matlab算法，在神经网络算法中预测效果好(Radial basis function RBF prediction matlab algorithm, the neural network algorithm predicted effective)

数据隐藏，做为一中隐蔽、嵌入的形式， 可以进行数字媒体数据的识别，注释和版权保护。(Data hiding,a form of steganography,embeds data into digital media for the purpose of identification,annotation,and copyright.)

SVPWM的matlab仿真模型，基于simulink搭建，完美实现两电平逆变输出。附带svpwm算法及实现过程，适合自学研究。(SVPWM matlab simulation model, based on simulink structures, the perfect realization of two-level inverter output. With svpwm algorithm and implementation process, suitable for self-study.)

利用QPSK编码方式，实现了MIMO利用MMSE估计方法的性能的评估，评估指标为BER，可直接运行。(QPSK encoding MIMO assessment of the performance of MMSE estimation method, the evaluation index for the BER, and can be run directly.)

说明：  压缩感知（Compressive Sensing，CS），有时也叫成Compressive Sampling。相对于传统的奈奎斯特采样定理——要求采样频率必须是信号最高频率的两倍或两倍以上（这就要求信号是带限信号，通常在采样前使用低通滤波器使信号带限），压缩感知则利用数据的冗余特性，只采集少量的样本还原原始数据。(（Compressive Sensing，CS）)

单通道欠采样测量频率的程序 可以正确得到信号的频率(dantongdao.m)