卫星与空间碎片碰撞预警的快速算法

提出了一种空间目标与空间碎片碰撞预警的快速计算方法，该算法不仅计算速度快，而且减缓了沿迹误差的影响，延长了预警的有效期，利用该方法，检测一个卫星与5800个空间碎片在一天内是否碰撞，计算时间小于3秒；用2天前的资料，预报计算法国CERISE卫星和空间碎片的碰撞时间误差约为0．02秒，空间位置误差约为500—600米．

A Computation Method to Warn the Collision Event between Space Probe and Debris

A computation method to warn the collision event between space probe and debris is proposed. It possesses many advantages, such as high computational efficiencies, low effect from along track error and much longer warning period of validity. With the method, to detect if collision would take place or not between space probe and 5800 debris in one day's interval, the computing time will be less than 3 seconds. Also with the method , the collision event between CERISES and a fragment of Ariana is calculated, the result shows ,that the error is 0.02 seconds in collision time and 500-600 meters in position.