›› 2013, Vol. 33 ›› Issue (4): 40-46.doi: 10.3780/j.issn.1000-758X.2013.04.006

• 技术交流 • 上一篇    下一篇

基于卫星自旋的纯引力轨道万有引力干扰抑制

 谷振丰,王兆魁,张育林   

  1. (清华大学航天航空学院,北京100084)
  • 收稿日期:2012-09-24 修回日期:2013-02-06 出版日期:2013-08-25 发布日期:2013-08-25
  • 作者简介:谷振丰 1985年生,2006年毕业于清华大学航天航空学院,现为清华大学航空宇航科学与技术专业博士研究生。研究方向为空间纯引力轨道构造、重力场测量卫星技术。
  • 基金资助:

    国家自然科学基金(11002076),国家高分重大专项项目(GFZX04011101)资助项目

Reduction of Gravitational Attraction Disturbance to Purely Gravitational Orbit Based on Satellite Spinning

 GU  Zhen-Feng, WANG  Zhao-Kui, ZHANG  Yu-Lin   

  1. (School of Aerospace, Tsinghua University, Beijing 100084)
  • Received:2012-09-24 Revised:2013-02-06 Online:2013-08-25 Published:2013-08-25

摘要: 一个称为“内卫星”的验证质量块位于外卫星的内部空腔中,不与外卫星接触而自由飞行,由于外卫星的屏蔽,其不受大气阻力、太阳光压等干扰作用,沿着纯引力轨道飞行。外卫星会对内卫星产生万有引力作用,是内卫星纯引力轨道的主要残余干扰。根据卫星相对运动动力学方程,建立了万有引力干扰对内卫星纯引力轨道影响的分析模型;基于将外卫星绕轨道面法向旋转以调制万有引力的策略,建立了外卫星自旋对万有引力干扰影响的抑制模型。以内编队纯引力飞行系统为例,对比计算了外卫星有无自旋时万有引力干扰对内卫星纯引力轨道的影响。基于模型的分析表明,外卫星自旋能够显著抑制万有引力干扰对内卫星纯引力轨道的长期影响;实例计算表明,万有引力干扰的天长期影响能够降低5~7个数量级。

关键词: 纯引力轨道, 内卫星, 外卫星, 万有引力干扰, 内编队系统

Abstract: An inner satellite which is a proof mass freely flying in the shield cavity of the outer satellite does not suffer the external disturbances, such as air drag and solar pressure, and follows a purely gravitational orbit. The gravitational attraction on the inner satellite due to the outer satellite is a significant disturbance source to the purely gravitational orbit. The analysis model was deduced from the relative motion equation of formation flying to calculate the effect of gravitational attraction to purely gravitational orbit. With the outer satellite spinning to modulate the gravitational attraction, the function of reducing the effect of gravitational attraction was analyzed. It indicates that spinning of the outer satellite can evidently reduce the long-period effect of gravitational attraction disturbance. The departures of the inner satellite from the purely gravitational orbit due to the gravitational attraction were calculated for the Inner Formation Flying System with the outer satellite spinning or not. The comparison shows that the days departure can be reduced by about five to seven orders of magnitude if the outer satellite is rotated.

Key words: Purely gravitational orbit, Inner satellite, Outer satellite, Gravitational attraction disturbance, Inner formation flying system