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In this session, I will focus on the gridding method for fast image reconstruction from non- Cartesian data [1-5]. While gridding is not the only game in town, it is the reconstruction of choice when reconstruction time is an issue. Other reconstruction techniques include rBURS [6] and non-Cartesian iterative methods [7,8]. Non-Cartesian iterative methods generally use gridding and inverse gridding as their core operation, so even when gridding is not the right solution for an application, an understanding of gridding can be useful. I will cover the main steps of the gridding algorithm and then discuss some implementation tips that can signicantly reduce the computation time. Finally, I will present some illustrations and viewpoints that I have found to aid in an intuitive understanding of the gridding method, which can be helpful when designing the density compensation function and judging the appropriateness of gridding as a solution for a particular application.

this source code is very good

lms自适应算法实现谱线增强，通过该算法可以实现过滤宽带信号，保留窄带信号(LMS adaptive line enhancement algorithm, the algorithm can be achieved through filtering of broadband signals, narrowband signals retained)

matlab图像处理的基本例程，图像放大和缩小(matlab image processing basic routines, image zoom in and out)

这个子程序主要写的是由判决变量量化判决出QAM复振幅，(This subroutine is written by the decision variable to quantify the judgment QAM complex amplitude,)

The number π is a mathematical constant that is the ratio of a circle s circumference to its diameter and is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes romanized as "pi

IEEE14节点进行牛顿拉弗逊法计算电力系统潮流计算(IEEE14 node calculates Newtonian Raphson method for power flow calculation)

this is module C that I wrote for FFT radix 2-2 1024 point.

dbpsk信号的调制解调matlab代码实现的一个例子，调制时差分编码，这样用1bit延迟差分检测的结果，直接就是原码，解调采用1bit差分延迟检测．(DBPSK signal modulation and demodulation matlab code an example of differential modulation encoding, such 1bit delay with the results of differential detection, direct that the original code, demodulation using 1bit delay differential detection.)

计算三相短路的短路电流 ，各节点电压，各支路电流(Calculate the three-phase short-circuit short-circuit current of each node voltage, branch current)