ABSTRACT
In most cases, the warhead of a ballistic missile will execute a ballistic reentry. However, this kind of reentry could badly reduce the impact precision, as a result of two possible sources of errors: (1) the transition trajectory cannot achieve perfect arriving of the specified reentry position with the required time and flight path angle as the guidance in boost phase is only an approximate solution and (2) appreciable aerodynamic uncertainty exists, due to either modeling mismatch or the effects of ablation sustained during reentry flight.
