On the basis of phase space analysis about measured vibration signals, the characteristics of special nonlinear autonomous vibration about the structure included in the system were obtained.
在实测的振动信号相空间分析的基础上，得到系统所包含的结构振动的特殊非线性自主振动的特征。
Autonomous celestial navigation system is a typical nonlinear, non-Gaussian dynamic system.
天文导航系统是典型的非线性和噪声非高斯分布的系统。
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