Optimal UCAV path planning under missile threats

Abstract: The problem of path planning for unmanned combat aerial vehicles (UCAVs) in the presence of radar-guided surface-to-air missiles is treated. The problem is formulated in the framework of the model, which includes three subsystems: the aircraft, the radar, and the missile. Based on this model, the problem of UCAV path planning is formulated as a minimax optimal control problem, with the aircraft lateral acceleration serving as control. Necessary conditions of optimality for this minimax problem are derived, optimal control is characterized and utilized as a basis for an efficient numerical solution. Illustrative examples are considered that confirm standard flying tactics of “denying range, aspect, and aim,” by yielding flight paths that “weave” to avoid long exposures.