,An ergodic algorithm for long-term coverage of elliptical orbits

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:kzhengting
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This paper deals with the coverage analysis problem of elliptical orbits.An algorithm based on ergodic theory,for long-term coverage of elliptical orbits,is proposed.The differential form of the invariant measure is constructed via the perturbation on mean orbital elements resulted from the J2 term of non-spherical shape of the earth.A rigorous proof for this is then given.Different from the case of circular orbits,here the flow and its space of the dynamical system are defined on a physical space,and the real-value function is defined as the characteristic function on station mask.Therefore,the long-term coverage is reduced to a double integral via Birkhoff-Khinchin theorem.The numerical implementation indicates that the ergodic algorithm developed is available for a wide range of eccentricities.
其他文献
本试验研究了华杂棉H318和华杂棉4号两个审定杂交棉品种的正交组合(B11×4-5,B11×119-1)和反交组合(4-5×B11,119-1×B11)F1苗期主要农艺性状、经济性状的杂种优势表现以及华
Two-step excitation and ionization processes are used to detect Sm atoms in many excited states populated with tunable lasers.The wavelength of the first laser
The electron capture timeseale may be shorter than hydrodynamic timescale in inner iron core of core-collapse supeova according to a recent new idea. Based on t
This paper studies the narrow spectral feature appearing in a four-level system coupled by two strong coherent fields and probed by a weak laser field. The line
In this paper,the effect of imperfect channel state information at the receiver, which is caused by noise and other interference, on the multi-access channel ca
花序形态建成是开花植物独具的特征。禾本科植物的花序长度和分枝数目决定花的数量,进而在很大程度上影响着谷物的生产能力。玉米是禾本科植物中雌雄异花的植物,其花序发育具有鲜明的特点。雄花序位于植株顶端,发育要稍早于叶腋处的雌花序。研究表明,大量的转录因子类基因在各类分生组织的身份、确定性和维持过程中起着至关重要的作用。另外,small RNA也在转录及转录后水平参与花序发育进程。ARGOUNAUTE(A
《明皇出游图》是石涛传世作品中罕见的一幅鸿篇巨制,石涛在题款中明确说明此画是“漫临”南宋“名绘神物”。由于没有具体创作年代,对于这幅巨制,我们必须从石涛一生绘画艺