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Geosynchronous inclined orbits for high-latitude communications

机译：用于高纬度通信的地球同步倾斜轨道

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摘要

We present and discuss a solution to the growing demand for satellite telecommunication coverage in the high latitude geographical regions (beyond 55 degrees N), where the signal from geostationary satellites is limited or unavailable. We focus on the dynamical issues associated to the design, the coverage, the maintenance and the disposal of a set of orbits selected for the purpose. Specifically, we identify a group of highly inclined, moderately eccentric geosynchronous orbits derived from the Tundra orbit (geosynchronous, eccentric and critically inclined). Continuous coverage can be guaranteed by a constellation of three satellites in equally spaced planes and suitably phased. By means of a high-precision model of the terrestrial gravity field and the relevant environmental perturbations, we study the evolution of these orbits. The effects of the different perturbations on the ground track (which is more important for coverage than the orbital elements themselves) are isolated and analyzed. The physical model and the numerical setup are optimized with respect to computing time and accuracy. We show that, in order to maintain the ground track unchanged, the key parameters are the orbital period and the argument of perigee. Furthermore, corrections to the right ascension of the ascending node are needed in order to preserve the relative orientation of the orbital planes. A station-keeping strategy that minimizes propellant consumption is then devised, and comparisons are made between the cost of a solution based on impulsive maneuvers and one with continuous thrust. Finally, the issue of end-of-life disposal is discussed.
机译：我们提出并讨论一种解决方案，以解决在高纬度地理区域（北纬55度以上）中对地静止卫星的信号有限或不可用的卫星电信覆盖范围日益增长的需求。我们专注于与为此目的选择的一组轨道的设计，覆盖范围，维护和处置相关的动力学问题。具体来说，我们确定了一组从Tundra轨道衍生出来的高度倾斜，中等偏心的地球同步轨道（地球同步，偏心和临界倾斜）。可以通过在等距间隔的平面中适当配置三个卫星的星座来保证连续覆盖。通过高精度的地面重力场模型和相关的环境扰动，我们研究了这些轨道的演化。隔离并分析了不同扰动对地面轨道的影响（对轨道的覆盖比轨道元素本身更重要）。物理模型和数值设置针对计算时间和准确性进行了优化。我们表明，为了保持地面轨迹不变，关键参数是轨道周期和近地点的论点。此外，为了保持轨道平面的相对取向，需要对上升节点的右上升进行校正。然后，设计了一种将推进剂消耗降至最低的站位维护策略，并在基于脉冲机动的解决方案与具有连续推力的解决方案的成本之间进行了比较。最后，讨论了报废处理的问题。

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  • 来源
    《Acta astronautica》 |2017年第11期|570-582|共13页
  • 作者

    Fantino E.; Flores R. M.; Di Carlo M.; Di Salvo A.; Cabot E.;

  • 作者单位

    Space Studies Inst Catalonia IEEC, Gran Capitan 2-4, Barcelona 08034, Spain|KUST, Dept Aerosp Engn, Abu Dhabi, U Arab Emirates;

    UPC, CIMNE, Bldg C1,Campus Norte,Gran Captain S-N, Barcelona 08034, Spain;

    Univ Strathclyde, Dept Mech & Aerosp Engn, 75 Montrose St, Glasgow G1 1XJ, Lanark, Scotland;

    NEXT Ingn Sistemi SpA, Space Innovat Syst Unit, Via A Noale 345-B, I-00155 Rome, Italy;

    UPC, Sch Ind Aeronaut & Audiovisual Engn ESEIAAT, Colom 11, Terrassa 08222, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Orbits; Geosynchronous; Perturbations; Station-keeping; Maneuvers; Low-thrust; Disposal; Communications;

    机译：轨道;地球同步;摄动;站位保持;操纵;低推力;处置;通信;

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