jacobi算法

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.)

CHOLMOD: a sparse Cholesky factorization package

利用MATLAB,plot等软件来实现地震资料的处理(The use of MATLAB, plot and other software to achieve seismic data processing)

学习abaqus子程序umat的绝好例子，权威专家编写(Learning excellent examples of abaqus umat subroutine, leading experts to write)

进行航天器轨道运算经常用到的函数，包括坐标转换，经纬度转换，二体运动，轨道要素计算等等(For spacecraft orbit operations frequently used functions, including coordinate conversion, latitude and longitude conversion, two-body movement, and so calculated orbital elements)

高速跳频，调制样式为DPSK(DPSK/FH)，包括信号的发射接收模型，自己写的代码，仅供参考。(High-speed frequency hopping, modulation pattern for DPSK (DPSK/FH), including the launch of signal reception model, write your own code, for reference purposes only.)

J2000 to WGS84 坐标矩阵转换(J2000 to WGS84 coordinate matrix transformation)

the code file that is uploded is harmfreq file

牛顿法的matlab程序。该函数是用牛顿法求根的迭代方法。(Newton method matlab program. The function is an iterative method for finding roots of Newton method.)

一个八位电话音频程序，每一个数字由两个频率控制，发出不同的声音(dianhua matlab)