Extension of the critical inclination

Extension of the critical inclination
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临界倾向的延伸

DOI:
10.1007/s10509-011-0685-y
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发表时间:
2011-03
影响因子:
1.9
通讯作者:
刘晓东
刘晓东
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
刘晓东

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临界倾角在人造卫星理论中具有特殊的意义。临界倾角可以使偏心率和心心角与初始值的偏差保持在最小,在此倾角下的轨道已应用于一些空间任务。以往关于临界倾角的研究大多是在假设扁率项在谐波系数中占主导地位的情况下进行的。本文探讨了批判倾向的外延,其中批判倾向的概念与传统意义上的批判倾向有所不同。首先,该研究以金星为例,提供了一些初步的结果。然后,在一般情况下,在给定偏心距和周心距的情况下,分析了临界倾角解的多重性与j24和j4值之间的关系。此外,在给定一定的j22和j4值时,研究了临界倾角解的多重度与半长轴和偏心距值之间的关系。结果表明,在某些情况下,临界倾斜度值与传统意义上的倾斜度值相差甚远,甚至存在多个解。本文的分析可作为天体全重力场修正方法的开端。
The critical inclination is of special interest in artificial satellite theory. The critical inclination can maintain minimal deviations of eccentricity and argument of pericentre from the initial values, and orbits at this inclination have been applied to some space missions. Most previous researches about the critical inclination were made under the assumption that the oblateness termJ2is dominant among the harmonic coefficients. This paper investigates the extension of the critical inclination where the concept of the critical inclination is different from that of the traditional sense. First, the study takes the case of Venus for instance, and provides some preliminary results. Then for general cases, given the values of argument of pericentre and eccentricity, the relationship between the multiplicity of the solutions for the critical inclination and the values ofJ2andJ4is analyzed. Besides, when given certain values ofJ2andJ4, the relationship between the multiplicity of the solutions for the critical inclination and the values of semimajor axis and eccentricity is studied. The results show that for some cases, the value of the critical inclination is far away from that of the traditional sense or even has multiple solutions. The analysis in this paper could be used as starters of correction methods in the full gravity field of celestial bodies.
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