Design of collision avoidance strategies based on phase modulation mechanism for spacecraft in circular orbit

LUO Yufei; MENG Yunhe

doi:10.13471/j.cnki.acta.snus.ZR20240025

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Design of collision avoidance strategies based on phase modulation mechanism for spacecraft in circular orbit

Research articles | 更新时间：2024-09-29

- Design of collision avoidance strategies based on phase modulation mechanism for spacecraft in circular orbit
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 63, Issue 4, Pages: 97-106(2024)
- 作者机构：
  
  中山大学人工智能学院，广东珠海 519082
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.ZR20240025
  CLC： V412.4
- Published：25 July 2024，
  
  Published Online：01 April 2024，
  
  Received：13 January 2024，
  
  Accepted：01 March 2024
- 稿件说明：
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罗宇飞,孟云鹤.基于调相机制的航天器碰撞规避策略设计[J].中山大学学报(自然科学版)(中英文),2024,63(04):97-106.

LUO Yufei,MENG Yunhe.Design of collision avoidance strategies based on phase modulation mechanism for spacecraft in circular orbit[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(04):97-106.
罗宇飞,孟云鹤.基于调相机制的航天器碰撞规避策略设计[J].中山大学学报(自然科学版)(中英文),2024,63(04):97-106. DOI： 10.13471/j.cnki.acta.snus.ZR20240025.

LUO Yufei,MENG Yunhe.Design of collision avoidance strategies based on phase modulation mechanism for spacecraft in circular orbit[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(04):97-106. DOI： 10.13471/j.cnki.acta.snus.ZR20240025.

摘要

针对携带电推进等小推力推进系统工作的航天器，提出一种利用连续推力调相机制的在轨碰撞规避机动策略。首先，采用混沌多项式展开方法对初始状态不确定性的航天器碰撞概率进行分析，并以此作为碰撞规避策略的评价指标；进而推导了一种适用于小推力的轨道机动的解析解。利用这一解析结果可以提出一种新的避碰方法，即通过航天器轨道相位的微调减小航天器碰撞概率，并且在机动后能够迅速恢复原轨道相位。数值仿真表明：基于所提出的避碰机动策略，可以在较短时间内减小碰撞概率。数值仿真还揭示了避碰时间、燃耗和推力加速度之间的关系。

Abstract

This paper proposed a collision avoidance maneuver strategy using a continuous thrust phasing mechanism for spacecraft equipped with low-thrust propulsion systems， such as electric propulsion. Firstly， the spacecraft collision probability based on the uncertainty of the initial state using chaotic polynomial expansion was analyzed， which served as an evaluation metric for collision avoidance strategies. Subsequently， an analytical solution for orbital maneuver applicable to low-thrust propulsion was derived. This analytical solution introduces a novel collision avoidance method， which involved fine-tuning the spacecraft's orbital phase to reduce collision probability. Besides， this method could swiftly restore the original orbital phase post-maneuver. Numerical simulations demonstrate that the proposed collision avoidance strategy effectively reduced collision probability within a short time. The simulations also revealed the relation between collision avoidance time， fuel consumption， and thrust acceleration.

关键词

碰撞规避策略碰撞概率小推力推进系统解析控制律

Keywords

collision avoidance strategycollision probabilitylow-thrust propulsion systemanalytical control law

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