Missile guidance laws based on pursuit–evasion game formulations

Abstract

The increasing maneuverability potential of tactical ballistic missiles motivates the development of improved interceptor guidance laws. In this paper two guidance laws are compared, both based on a pursuit–evasion differential game formulation. The first game is a linear-quadratic one. The second one is formulated with bounded controls and the miss distance as the performance index. The comparison shows that for the same values of physical parameters the capture zone (guaranteeing zero miss distance) of the guidance law using bounded controls, as well as the control effort associated with it, are larger. However, for short duration end games and for large values of interceptor maneuverability advantage the capture zones nearly coincide.