摘要
本文介绍一种由J.Laskar提出的、可以精确还原拟周期函数的主要拟周期项的频率分析方法 ,进而用该法给出一紧凑的月球物理天平动的近似拟周期表达 ,最后指出所介绍方法在研究具小耗散因素动力系统时的局限性并讨论有关对策。
In this paper, we introduce a frequency analysis method, proposed by J.Laskar, which can be used to recover main terms of a quasi periodic function. Furthermore, we use this method to give a compact approximate representation of the ephemeris of the lunar liberation. Finally, we indicate the limitation of the method when applied to dynamical system with small dissipation factors, and, discuss the relevant countermeasure.
关键词
频率分析方法
月球天平动历表
拟周期近似
frequency analysis method, ephemeris of the lunar liberation, quasi periodic approximation
