Trajectory Shaping Guidance Law Based on Ideal Line-of-sight

doi:10.3969/j.issn.1000-1093.2014.08.010

Abstract

Abstract: When a homing missile tracks a target, it may fail to lock the target because of complicated background. For example, when a missile attacks a target in look-down mode, the missile’ capability of intercepting or acquiring a target is weakened by complicated surface background and clutter. A new modeling method which regards the ideal line-of-sight as the control objective is put forward. And an optimal guidance law is designed based on restraining the terminal direction of relative motion between missile and target and the trajectory overload. The guidance law is used to control the motion of missile in a direction vertical to ideal line-of-sight. The simulation result shows that this method can meet the requirement of terminal trajectory shaping better, distribute the overload more reasonably and decrease the influence of ground background and clutter on target tracking effectively.

Key words: control science and technology, optimal guidance law, trajectory shaping, ideal line-of-sight, optimized acceleration

CLC Number:

TP273.3

LI Hao, SHE Hao-ping. Trajectory Shaping Guidance Law Based on Ideal Line-of-sight[J]. Acta Armamentarii, 2014, 35(8): 1200-1204.

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