complex

说明：  一个用MATLAB实现的二阶系统的编程,想望对下载的人有用(this is a small file for two order styem by MATLAB ,I hope it will be useful to your.)

说明：  按FPE定阶的 源程序：fpe.cpp M序列：M序列.txt 白噪声：Gauss.txt 程序中先用依模型阶次递推算法估计模型的参数，再用fpe方法判断模型的阶次。 程序运行结果如下： n: 1 判断阶次FPE的值: 0.0096406 -0.481665 1.07868 n: 2 判断阶次FPE的值: 0.00875755 -0.446739 0.00498181 1.07791 0.0527289 n: 3 判断阶次FPE的值: 0.0087098 -0.459433 0.120972 -0.0569228 1.07814 0.0390757 0.116982 n: 4 判断阶次FPE的值: 0.000396884 -0.509677 0.4501 -0.200906 0.0656188 1.07991 -0.0156362 0.442989 0.0497236 n: 5 判断阶次FPE的值: 3.2095e-007 -1.18415 0.813123 -0.517862 0.34881 -0.116864 1.07999 -0.744141 0.474462 -0.253112 0.122771 n: 6 判断阶次FPE的值: 3.23349e-007 -1.14659 0.76933 -0.487651 0.329676 -0.10377 -0.00440907 1.07999 -0.703574 0.447253 -0.235282 0.113587 0.00479688 从以上结果可以看出，当n=5时，fpe值最小，所以这时的模型阶次和参数估计值为最优结果： 3.2095e-007 -1.18415 0.813123 -0.517862 0.34881 -0.116864 1.07999 -0.744141 0.474462 -0.253112 0.122771(err)

笔者费了很大的经历找到的matlab实例资料，希望大家好好利用，绝对经典的好资料哦(Programming with vc for the sample program, which contains many of the author s experience, I hope you make good use of)

matlab 的程序求解三对角方程组,三对角方程组中的系数矩阵是非奇异的，这是前提条件。(matlab program for solving tridiagonal equations, tridiagonal equations nonsingular coefficient matrix, which is a prerequisite.)

C language is currently the more popular high-level computer programming language, because of its simplicity, ease of use and powerful features have been widely favored by programmers. It is suitable as a system description language, can also be used to prepare the system software, application software can be written since

这是卫星通信方向图测量软件 采用了VB编程，整个源代码通用 方便使用(This is a satellite communication pattern measurement software using VB programming, the entire source code to facilitate the use of generic)

说明：  救护车的报警程序，分别为1000Hz和800Hz.(Ambulance alarm procedures were 1000Hz and 800Hz.)

时域有限差分差分法仿真脉冲在真空以及有损耗和无损耗的介质的一维传播情况(FDTD simulation of a pulse )

matlab求解二阶常微分方程数值解，具有较好的效果，对学习matlab非常有用。(matlab solving second order ordinary differential equations, with good results, to learn matlab very useful.)

说明：  将ELCentro波的加速度时程转换成速度、位移时程(Converting the acceleration time history of ELCentro wave into velocity and displacement time history)