n.a missile that is guided in the first part of its flight but falls freely as it approaches target

BALLISTIC MISSILE
Ballistic missile track initiation from satellite observations
Ballistic missile track initiation from satellite observations
Infrared sensors for ballistic missile defense
A Two-Sided Optimization for Theater Ballistic Missile Defense
Tracking an incoming ballistic missile using an extended interval Kalman filter
Overview of the Lincoln Laboratory Ballistic Missile Defense Program
Northrop Grumman and EADS to collaborate on ballistic missile defense
Interacting multiple model filter for tactical ballistic missile tracking
Status quo and trend of infrared system and technologies for America's ballistic missile defense system