The debris will continue to spread, however, and potentially could force the station to make an avoidance maneuver at some point, said NASA spokesman John Yembrick.

Based on the virtual target point and the ellipse trajectory theory, a new maneuver method in the free - flight phase is presented.

Feature point extraction and tracking method is an important contents to studying imaging-based target tracking, and avails to the research on target identification, maneuver detection and so on.