Modified Receding Horizon Guidance Law

Abstract

In this paper, a modified receding horizon guidance law (MRHG) is proposed which can be a proper guidance law when the accurate time-to-go is available only for a short time before the final time. In the proposed MRHG, RHG is used before the accurate time-to-go is available and after that, OGL is used until the missile intercepts the target using the accurate time-to-go given for a short time. The proposed MRHG makes the lateral miss distance (MD) below the pre-described value before the accurate time-to-go is available and makes the terminal MD zero using the accurate time-to-go even in the presence of target maneuvers and an initial relative normal velocity between the target and the missile. Through simulation, the performance of MRHG is illusrtated in terms of the terminal MD the lateral MD and the missile normal acceleration.