xtouying

1. 给定模拟信号：，式中，，。对进行采样，可得采样序列 选择采样频率=1 kHz，观测时间ms，观测所得序列及其幅频特性 改变采样频率=300Hz，观测此时的变化 令采样频率=200Hz，观测此时的变化 要求分析说明原理，绘出相应的序列及其它们对应的幅频特性曲线，指出的变化，说明为什么？(failed to translatefailed to translatefailed to translatefailed to translate)

QAM(Quadrature amplitude modulation) Code in matlab

说明：  曲柄摇杆机构运动分析，角位移，加速度，角速度分析(Crank-rocker mechanism motion analysis, angular displacement, acceleration, angular velocity of)

a fingerprint program using matlab(a fingerprint program using Matlab)

计算标准大气特性的matlab代码，基于美国1976年的测试数据(source code in matlab for computing atmospheric characterics, based on the Data obtained in 1976 )

power_voltmeasure.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_voltmeasure.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

Prony方法是一种在已知时域冲击响应时构造IIR滤波器（即ARMA）的算法(Prony method is a kind of time-domain impulse response is known IIR filter structure (ie ARMA) algorithm)

随机产生m序列 即产生伪随机数 又叫做伪随机序列、伪噪声(PN)码或伪随机码。(M sequence that is randomly generated pseudo-random number generation, also known as pseudo-random sequence, a pseudo-noise (PN) code or pseudo-random code.)

simulation chapter 1 of the book : Power_Generetion_Operation by Wood : with matlab.

地质模型 使用此程序可以进行地质模型的有限差分计算 数学模型 (Use this procedure geological model geological model can be calculated by finite difference mathematical model)