MATLABjiemi

interface for 3D image approximation

说明：  QRS算法心电检测MATLAB程序源代码。(ECG QRS detection algorithm for MATLAB source code.)

说明：  melbankm函数的源程序。这个函数也要被melcepst函数调用，用来进行计算Mel倒谱系数。这个函数的作用是构造mel滤波器组(function [x,mn,mx]=melbankm(p,n,fs,fl,fh,w) MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W) )

直线阵进场聚焦波束形成算法，三维作图，伪彩图作图(Linear array approach focused beamforming algorithm, three-dimensional mapping, pseudo-color mapping)

说明：  络检波法，也可以用同步解调法，现在我们来使用同步解调法，即将已调信号和一个与载波信号同频率的信号相乘，在通过一个理想低通滤波器就可以得到原始信号(Envelope detection method, you can also use synchronous demodulation method, and now we use synchronous demodulation method, is about modulated signal and a signal is multiplied with the same frequency of the carrier signal, through an ideal low-pass filter can get the original signal)

In this paper the topology of a four-leg shunt active-power filter (APF) is given. The APF compensates harmonic and reactive power in a three-phase four-wire system.

一个FDTD二维的经典程序，非常不错，适合初学者使用。(A classic two-dimensional FDTD program, very good, suitable for beginners.)

Lagrange 插值,该程序实现线性，二次，三次等等lagrange插值功能。(the interpolation of Lagrange)

产生调频步进信号，再进行脉冲压缩，混频，最后进行高分辨率成像。本程序用于测距，参数可以进行修改。注释详细。(stepped LFM generating, and then pulse compression, mixing, and finally high-resolution imaging. The procedure used for ranging, the parameters can be modified. Detailed notes.)

Input data is the MS Excel file, where the table of nodes, table of elements, nodal external loads vector and boundary conditions are stored. After running the mabs2d.m file on the Command Window, the program calculates the stiffness matrix in local coordinates kiL (element i). Once the transformation matrix associated to the element is obtained, the stiffness matrix in global coordinates kiG is also calculated. The table of connectivity is automatically generated for the assembly process and then computes the complete stiffness matrix of the structure.