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http://dx.doi.org/10.12941/jksiam.2015.19.235

OPTIMAL IMPACT ANGLE CONTROL GUIDANCE LAWS AGAINST A MANEUVERING TARGET

RYOO, CHANG-KYUNG (DEPARTMENT OF AEROSPACE ENGINEERING, INHA UNIVERSITY)

Publication Information

Journal of the Korean Society for Industrial and Applied Mathematics / v.19, no.3, 2015 , pp. 235-252 More about this Journal

Abstract

Optimal impact angle control guidance law and its variants for intercepting a maneuvering target are introduced in this paper. The linear quadratic(LQ) optimal control theory is reviewed first to setup framework of guidance law derivation, called the sweep method. As an example, the inversely weighted time-to-go energy optimal control problem to obtain the optimal impact angle control guidance law for a fixed target is solved via the sweep method. Since this optimal guidance law is not applicable for a moving target due to the angle mismatch at the impact instant, the law is modified to three different biased proportional navigation(PN) laws: the flight path angle control law, the line-of-sight(LOS) angle control law, and the relative flight path angle control law. Effectiveness of the guidance laws are verified via numerical simulations.

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Reference

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