Abstract

A two-tier approach to the midcourse trajectory design for a surface-to-air missile to maximize the probability of hit is presented. The e rst tier represents the midcourse trajectory of the missile, and the second tier represents the terminal homing phase. The e rst-tier trajectory is optimized with an auxiliary constraint on the value of the approach angle to the intercept at handover to the terminal phase. The handover approach angle is used as the governing parameter in generating a e eld of optimum e rst-tier midcourse trajectories. The second-tier model estimates the probability of hit including a full suite of stochastic error sources on the seeker and missile. The optimal approach angleand midcoursetrajectory aredemonstrated to bedependent on the terminal homing noise contributors and the target maneuver.

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