编队卫星碰撞规避方法研究

对编队卫星碰撞规避方法进行了研究。通过递推编队卫星的初始状态协方差阵,将碰撞概率密度函数在危险区域积分获得编队卫星的碰撞概率。当碰撞概率大于安全阈值时,向卫星施加最小脉冲速度修正量Δv,在垂直于终止时刻相对速度的平面机动一定距离以降低碰撞概率。仿真结果表明:用计算的碰撞概率能较好地预测编队卫星的潜在碰撞危险,所选机动策略有效。

Research on Methods of Collision Avoidance for Formation Flying Satellites

The methods of collision avoidance for formation flying satellites were studied in this paper.By propagating the relative state covariance matrix forward and integrating the collision probability density in the risk region,the collision probability of the formation flying satellites was calculated.In the condition that the collision probability was exceeded the safety threshold,a miss distance was created in the plane orthogonal to the final relative velocity by applying an impulsive Δv with minimum magnitude.The simulation results showed that the potential collision risk would be predicted by the calculated collision probability accurately,and the maneuver strategy was efficient.