Precession character study of space target in midcourse

Characters analysis for space target is the basis of target modeling. Here I analyzed the precession characters of axis-symmetry and non-axis-symmetry targets in midcourse, gave some simple models and computational formulas on precession parameter for targets such as true warhead, bait with same profile, metallic air balloon, space fragment and mother cabin. It has more significance on modeling and simulation for characters of targets in midcourse.