用matlab求响应曲线包络线的程序，是用来绘制lamb波在复合材料板中的传播响应曲线的。-Use matlab for response curve of envelope，Is used to draw the lamb wave propagation in composite material plate response curve。

惯性导航系统误差传播特性分析，北航惯性导航基础大作业，内含matlab程序代码-Inertial navigation system error propagation characteristics analysis, Northern Inertial Navigation foundation work, containing matlab code