火星的岁差和章动

Martian Precession and Nutation

火星是类地行星,火星动力学的研究不仅具有科学意义,而且还具有实际应用价值。火星的空间探测获得了许多有关火星极运动的重要资料,它与理论值的比较是检验火星内部结构的重要手段,也是为改进火星岁差章动理论提供依据的有效途径。介绍了当前国际上有关火星的岁差和章动研究的进展,分别对刚体火星的牵动序列、火星内部结构参数化模型的建立和火星自转的简正模作了描述,并进行了简单的讨论。

Mars is a terrestrial planet. Mars' dynamic research has not only scientific significance, but also practical, applicable value. The motion of Mars' pole in space depends directly on the precession and nutation of the planet. Martian precession and nutation, on the one hand, can be theoretically modeled; on the other hand, they are constrained by the observational data from the space exploration for Mars. The comparison between the observational data and the theoretical results on the motion of Mars' pole is an important means for checking the Martian internal structure. It also provides the basis for improving the theory of Martian precession and nutation. The recent progress on studies of Martian precession and nutation is reviewed. The rigid Mars nutation series, the construction of the parametric models of the internal structure for Mars and the normal mode of the Mars' rotation are discussed respectively.