Study on Quick Selection Technology of Low-Orbit Spacecraft Collision-Avoidance Strategy

Considering the fact that more and more collision-warning events occur in daily management of low-orbit spacecraft, this paper investigates some key techniques of the spacecraft collision-avoidance. Radial and trajectory separation methods are analyzed emphatically. The relationship between separating effect and control quantity, control position as well as control time is revealed. The radial separation method uses relationship of velocity control quantity and the radial distance change quantity to calculate control quantity which satisfied mission requirement. New method design has guidance role for collision-avoidance realization in the practical work.