Stationkeeping techniques for libration-point satellites
Stationkeeping techniques for libration-point satellites
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DOI：
10.1007/bf03546340
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发表时间：
2001
影响因子：
1.8
通讯作者：
D. Dunham;C. Roberts
中科院分区：
文献类型：
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作者：
D. Dunham;C. Roberts
共线平动点附近的轨道是不稳定的，需要保持位置机动来维持。人们提出了几种计算平动点轨道位置保持机动的方法。第三次国际日地探测器（ISEE-3），即第一次天秤点使命，使用了一种严密的控制技术。后来开发了一种易于实施的“轨道能量平衡”松散控制策略，并已被太阳日光层天文台和高级成分探测器成功使用。对于SOHO来说，这种松散的控制导致每年的位置保持Δ V成本略高于2米/秒，每年进行大约四次机动，比ISEE-3的严格控制几乎提高了四倍。部分增益可能是由于改进的SOHO辐射跟踪数据更好地确定了轨道。所有三个任务，特别是SOHO，都有操作失误，导致燃料的临时支出远远超过预期，但尽管如此，航天器似乎可以在发射前保持在设计的光环轨道上的时间比计划的时间长。
Orbits about collinear libration points are unstable, requiring stationkeeping maneuvers to maintain. Several different methods for calculating libration-point orbit stationkeeping maneuvers have been proposed. A tight control technique was used by the third International Sun-Earth Explorer (ISEE-3), the first libration-point mission. An easily-implemented “orbital energy balancing” loose control strategy was developed later and has been used successfully by the Solar Heliospheric Observatory (SOHO) and Advanced Composition Explorer (ACE). For SOHO, this loose control has resulted in station-keeping ΔVcosts of just over 2 m/sec per year with maneuvers performed about four times a year, an improvement of almost a factor of four over ISEE-3’s tight control. Part of the gain probably results from better trajectory determinations from improved radiometric tracking data for SOHO. All three missions, especially SOHO, have had operational mishaps that have resulted in temporary expenditures of fuel that were much larger than expected, but in spite of these, it appears that the spacecraft can be kept in their designed halo orbits for periods longer than planned before launch.